-
21 formation of a shock wave in supersonic flow past a body
Универсальный англо-русский словарь > formation of a shock wave in supersonic flow past a body
-
22 hypersonic flow-past
Техника: гиперзвуковое обтекание -
23 mechanism of turbulence formation in the wake in flow past finite body
Универсальный англо-русский словарь > mechanism of turbulence formation in the wake in flow past finite body
-
24 potential flow past an elliptical cylinder
Универсальный англо-русский словарь > potential flow past an elliptical cylinder
-
25 potential flow past ellipsoid
Макаров: потенциальное обтекание эллипсоидаУниверсальный англо-русский словарь > potential flow past ellipsoid
-
26 steady flow-past
Техника: установившееся обтекание -
27 steady turbulent flow past a body
Универсальный англо-русский словарь > steady turbulent flow past a body
-
28 subsonic flow past a thin wing
Макаров: дозвуковое обтекание тонкого крылаУниверсальный англо-русский словарь > subsonic flow past a thin wing
-
29 subsonic flow-past
Техника: дозвуковое обтекание -
30 supersonic flow past a pointed body
Универсальный англо-русский словарь > supersonic flow past a pointed body
-
31 supersonic flow past a wing
Макаров: сверхзвуковое обтекание крылаУниверсальный англо-русский словарь > supersonic flow past a wing
-
32 supersonic flow-past
Техника: обтекание сверхзвуковым потоком -
33 transonic flow-past
Техника: обтекание околозвуковым потоком -
34 unsteady flow-past
Техника: неустановившееся обтекание -
35 flow
-
36 flow
1. Iblood flows течет кровь; blood win flow прольется кровь; blood ceased flowing кровь остановилась; the spring ceased to flow родник иссяк; tears ceased flowing слезы высохли; the tide began to flow начался прилив2. IIflow in some manner rivers (streams, etc.) flow calmly /placidly/ (silently, lazily, etc.) реки и т. д. текут /несут свой воды/ спокойно и т. д.; tears flow noiselessly (incessantly, touchingly, etc.) слезы льются беззвучно и т. д.; wine flowed plentifully вино лилось рекой; words (sentences, speeches, verses, etc.) flowed steadily (pleasantly, serenely, majestically, lyrically, spontaneously, melodiously, etc.) слова и т, д. лились спокойно /ровно/ и т. д.; conversation flowed freely беседа текла свободно; flow somewhere the brook flows eastward (southward, etc.) ручей течет к востоку /в восточном направлении/ и т. д.3. XVI1) flow down (along, into, over, from, etc.) smth. rivers (streams, etc.) flow down the mountains (along the meadows, in the valleys, etc.) реки и т. д. текут с гор и т. д.; the river flows into the lake (into the sea) река впадает в озеро (в море); the river flowed over its banks река вышла из берегов /залила, затопила берега/; tears flowed down his cheeks по его щекам покатались / полились/ слезы; tears flowed from his eyes у него из глаз брызнули /полились/ слезы; Negro blood flows in his veins в его жилах течет негритянская.кровь; gold flows out of the country золото уплывает из страны; the crowd flowed out of the theatre толпа хлынула /выплеснулась/ из театра; the traffic (the crowd, etc.) flows past the square (past the Marble Arch, along the street all day, in a steady stream. etc.) транспорт и т. д. сплошным потоком движется по площади и т. д.; words flowed from his lips easily and naturally слова легко и естественно слетали с егo губ2) flow in smth. the dress flowed ill artistic lines платье падало /ниспадало/ красивыми складками; her hair flowed in the wind ее волосы развевались на ветру3) flow from smth. unhappy consequences (excellent results, etc.) flow from his actions (from this step, from this measure. etc.) его поступки и т. д. ведут к печальным последствиям и т. д. -
37 flow-through shares
фин. проточные акции* Details of the Flow-Through Shares (FTSs) and Flow-Through Warrants (FTWs) Subscribed.http:www.greaterkwchamber.com/market_watch_flowthru_Jun04.shtmlFlow-Through shares are one of the few remaining tax-assisted investment vehicles available to investors in Canada. Flow-Through Limited Partnerships are tax-advantaged vehicles designed to invest in a portfolio of flow-through shares, usually issued by resource-based companies. Since the introduction of the tax system in 1954, the Canadian government has been working on additional ways to encourage exploration and development in the resource sector. In the 1993 Federal budget, the government allowed certain investors to deduct exploration expenses against income. Since that time there has been a dramatic increase in exploration activity.Flow-through shares do not exist to circumvent any tax rules or to take advantage of any loopholes in the Tax Act. These flow-through shares benefit from certain provisions within the Tax Act that were explicitly created by government, as mentioned above.There are actually three advantages created by flow-through shares, with respect to taxation. The primary benefit of flow-through share investing is the ability of the investment to convert income, in the current year, into capital gains in future years. With the preferential tax treatment of capital gains over income, there is an immediate benefit to the investor. The second is that a tax deferral is created.It is assumed, unless in a highly inflationary environment, that if one can defer the payment of taxes to a later date, that individual has gained a definite advantage. The third advantage created is through tax efficiency. The purchase and subsequent tax credit creates an ACB or adjusted cost base of zero. This is part of the first advantage, whereby income is converted into capital gains. However, there is an added advantage with this conversion. It allows an individual to benefit from capital losses, those losses that have accumulated from past investments in non-registered accounts, by creating capital gains that can be partially or fully offset by those losses.In evaluating tax shelters, it is important to evaluate the tax shelter in the same way as a non-tax shelter investment. That is to say legal and accounting advisers should be consulted and the investment should be examined from a business risk and return point of view. For example, with a real estate investment, the real estate market in the target area should be examined. It may not make a lot of sense to acquire real estate, even if tax sheltered, in a market which is declining. -
38 calculation
вычисление, расчёт -
39 continuous current-carrying capacity
длительная пропускная способность по току
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999 г.]Тематики
- электротехника, основные понятия
EN
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
Англо-русский словарь нормативно-технической терминологии > continuous current-carrying capacity
-
40 ampacity (US)
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
Англо-русский словарь нормативно-технической терминологии > ampacity (US)
См. также в других словарях:
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