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1 система неравенств
inequality system мат., simultaneous inequalitys, system of inequalitiesРусско-английский научно-технический словарь Масловского > система неравенств
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2 система неравенств
1) Engineering: simultaneous inequalities2) Mathematics: inequality system, system of inequalities3) Economy: set of inequalities4) Makarov: inequality setУниверсальный русско-английский словарь > система неравенств
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3 Определенные артикли перед существительными, которые снабжены ссылками
The differential problem (1) can be reduced to the form (2)The asymptotic formula (1) follows from the above lemmaThe differential equation (1) can be solved numericallyWhat is needed in the final result is a simple bound on quantities of the form (1)The inequality (1) (артикль можно опустить) shows that $a>b$The bound (estimate) (2) is not quite as good as the bound (estimate) (1)If the norm of $A$ satisfies the restriction (1), then by the estimate (2) this term is less than unitySince the spectral radius of $A$ belongs to the region (1), this iterative method converges for any initial guessesThe array (1) is called the matrix representing the linear transformation of $f$It should be noted that the approximate inequality (1) bounds only the absolute error in $x$The inequality (1) shows that...The second step in our analysis is to substitute the forms (1) and (2) into this equation and simplify it by dropping higher-order termsFor small $ze$ the approximation (1) is very good indeedA matrix of the form (1), in which some eigenvalue appears in more than one block, is called a derogatory matrixThe relation between limits and norms is suggested by the equivalence (1)For this reason the matrix norm (1) is seldom encountered in the literatureTo establish the inequality (1) from the definition (2)Our conclusion agrees with the estimate (1)The characterization is established in almost the same way as the results of Theorem 1, except that the relations (1) and (2) take place in the eigenvalue-eigenvector relation...This vector satisfies the differential equation (1)The Euclidean vector norm (2) satisfies the properties (1)The bound (1) ensures only that these elements are small compared with the largest element of $A$There is some terminology associated with the system (1) and the matrix equation (2)A unique solution expressible in the form (1) restricts the dimensions of $A$The factorization (1) is called the $LU$-factorizationIt is very uncommon for the condition (1) to be violatedThe relation (1) guarantees that the computed solution gives very small residualThis conclusion follows from the assumptions (1) and (2)The factor (1) introduced in relation (2) is now equal to 2The inequalities (1) are still adequateWe use this result without explicitly referring to the restriction (1)Русско-английский словарь по прикладной математике и механике > Определенные артикли перед существительными, которые снабжены ссылками
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4 небаланс напряжений
небаланс напряжений
Отличие по модулю значения хотя бы одного из фазных или линейных напряжений многофазной системы электроснабжения от значений напряжений других фаз.
[ ГОСТ 23875-88]EN
voltage unbalance
phenomenon due to the differences between voltage deviations on the various phases, at a point of a polyphase system, resulting from differences between the phase currents or geometrical asymmetry in the line
[IEV number 604-01-29]
voltage unbalance (imbalance)
in a polyphase system, a condition in which the magnitudes of the phase voltages or the phase angles between consecutive phases are not all equal (fundamental component)
NOTE In three phase systems, the degree of inequality is usually expressed as the ratio of the negative and zero sequence components to the positive sequence component. In this technical report, voltage unbalance is considered in relation to three-phase systems and negative sequence only
[IEC 61000-3-13, ed. 1.0 (2008-02)]
voltage unbalance
condition in a polyphase system in which the r.m.s. values of the line voltages (fundamental component), and/or the phase angles between consecutive line voltages, are not all equal
NOTE 1 The degree of the inequality is usually expressed as the ratios of the negative- and zero-sequence components to the positive-sequence component.
NOTE 2 In this standard, voltage unbalance is considered in relation to 3-phase systems.
[IEC 61000-4-30, ed. 2.0 (2008-10)]FR
déséquilibre des tensions d'un réseau
phénomène résultant des différences de charge ou des dissymétries géométriques de lignes et qui provoque des différences entre les écarts de tension sur les diverses phases en un point d'un réseau polyphasé
[IEV number 604-01-29]
déséquilibre de tension
dans un réseau d’énergie électrique polyphasé, état dans lequel les valeurs efficaces des tensions entre conducteurs (composante fondamentale), et/ou les différences de phase entre conducteurs successifs, ne sont pas toutes égales
NOTE 1 Le taux de déséquilibre s’exprime habituellement par le rapport de la composante inverse ou homopolaire à la composante directe.
NOTE 2 Dans la présente norme, le déséquilibre de tension est relatif aux réseaux triphasés
[IEC 61000-4-30, ed. 2.0 (2008-10)]Параллельные тексты EN-RU
Voltage unbalance
Voltage unbalance on the most unbalanced phase, displayed as a percentage of Vavg.
[Schneider Electric]Небаланс напряжений
Самое значительное отличие по модулю значения одного из линейных напряжений, выраженное в процентах от среднего напряжения Vavg.
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Тематики
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Русско-английский словарь нормативно-технической терминологии > небаланс напряжений
5 оценка
1) General subject: account (by all accounts - по общим отзывам), appraisal, appraisal (деятельности и т.п.), appraisal (качества и т.п.), appraisement, appreciation, assessment, diagnostic, equilibration (обыкн. советов), estimate, estimation, evaluating, evaluation, mark (знаний), rater, rating, regard, size-up, summing up, summing-up (положения), valuation, valuation (запасов), value, diagnosis, characterization, valutazione2) Naval: quotation3) Medicine: assessment (напр. жизнеспособности), score4) Colloquial: guesstimate (интуитивная)5) American: adjustment (ущерба), grade, grade (в школе), rate (в школе)7) Sports: assessing of difficulty, assessment of difficulty, classing8) Military: consideration, reliability assessment of components, review9) Engineering: bound (случайной величины), estimate (предварительный подсчёт), estimation (предварительный подсчёт), estimator, qualification, rate10) Agriculture: assessment (сорта, признака), evaluation (качества), judging, tax assessment, valoration11) Chemistry: assessing12) Mathematics: assessed value, direction-free estimator (полученная методом наименьших квадратов), est (estimate), eval (evaluation), inequality, valuation function14) Economy: assessment (недвижимого имущества в целях налогообложения), costing, estimating, guess value, value judgment15) Accounting: estimated value, evaluation (напр. качества), statistic (параметра)16) Statistics: validation (напр. качества)17) Insurance: survey18) Automobile industry: definition (качества)19) Diplomatic term: summing-up (ситуации и т.п.)22) Jargon: hinge23) Information technology: analysis, evaluation (выражения, условия), guess, measure, scope, stock-taking24) Oil: appraisal (скважины; месторождения), definition, estimate (как результат), estimation (как процесс), evaluation (как процесс), judgment, qualification (качества), valuation, appraisal (внутренняя/внешняя)25) Dentistry: scaling28) Ecology: taxation29) Advertising: adjudication, merit, validation30) Patents: assessment (при вычислениях)32) SAP. val., valn33) Drilling: appraising, aspect, scoping34) Audit: appraisal ( of mineral reserves) (запасов полезных ископаемых), assess, measurement35) EBRD: appraised value36) Programming: testing37) Automation: assessment (статистическая), definition (напр. качества), investigation, study38) Quality control: appraisal (качества), (статистическая) estimator39) Robots: estimator( статистическая)40) Sakhalin R: appraisal (месторождений)42) Makarov: assessment (в т.ч. данных, полученных в результате мониторинга), assessment (количественная), costing (стоимости), estimate (частный результат), estimation (в осн. в мат. статистике), estimation (результат), estimator (как значение, величина), estimator (общее ур-ние в мат. статистике), expectance, expectation, expectation value, judgement (суждение), judging practice (скота), qualification (кач-ва, пригодности), reckoning, score (в баллах), weighting43) Gold mining: internal audit44) SAP.tech. valuating45) SAP.fin. calculating values46) Combustion gas turbines: assessment (напр., к.п.д., потерь и пр.)47) Microsoft: star rating, system rating48) General subject: approximation6 несимметрия напряжений
несимметрия напряжений
Состояние системы энергоснабжения трехфазного переменного тока, в которой среднеквадратические значения основных составляющих междуфазных напряжений или углы сдвига фаз между основными составляющими междуфазных напряжений не равны между собой.
Примечания
1 Степень несимметрии обычно выражают отношением напряжений обратной и нулевой последовательностей к напряжению прямой последовательности.
2 В настоящем стандарте несимметрия напряжений рассматривается применительно только к трехфазным системам энергоснабжения.
[ ГОСТ Р 51317.4.30-2008 (МЭК 61000-4-30:2008)]EN
voltage unbalance
condition in a polyphase system in which the r.m.s. values of the line voltages (fundamental component), and/or the phase angles between consecutive line voltages, are not all equal
NOTE 1 The degree of the inequality is usually expressed as the ratios of the negative- and zero-sequence components to the positive-sequence component.
NOTE 2 In this standard, voltage unbalance is considered in relation to 3-phase systems.
[IEC 61000-4-30, ed. 2.0 (2008-10)]FR
déséquilibre de tension
dans un réseau d’énergie électrique polyphasé, état dans lequel les valeurs efficaces des tensions entre conducteurs (composante fondamentale), et/ou les différences de phase entre conducteurs successifs, ne sont pas toutes égales
NOTE 1 Le taux de déséquilibre s’exprime habituellement par le rapport de la composante inverse ou homopolaire à la composante directe.
NOTE 2 Dans la présente norme, le déséquilibre de tension est relatif aux réseaux triphasés.
[IEC 61000-4-30, ed. 2.0 (2008-10)]Тематики
EN
FR
3.34 несимметрия напряжений (voltage unbalance): Состояние системы энергоснабжения трехфазного переменного тока, в которой среднеквадратические значения основных составляющих междуфазных напряжений или углы сдвига фаз между основными составляющими междуфазных напряжений не равны между собой.
Примечания
1 Степень несимметрии обычно выражают отношением напряжений обратной и нулевой последовательностей к напряжению прямой последовательности.
2 В настоящем стандарте несимметрия напряжений рассматривается применительно только к трехфазным системам энергоснабжения.
3.35 установившееся отклонение напряжения: Разность между среднеквадратическим значением напряжения основной частоты в системе электроснабжения, определенным на установленном интервале времени, и номинальным значением напряжения.
3.36
Источник: ГОСТ Р 51317.4.30-2008: Электрическая энергия. Совместимость технических средств электромагнитная. Методы измерений показателей качества электрической энергии оригинал документа
Русско-английский словарь нормативно-технической терминологии > несимметрия напряжений
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