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•The magnetic moment produces a diamagnetic effect.
•It is this reaction which builds up the reservoir of activated molecules.
•Displacing a particle in one direction brings about a force in the opposite direction.
•This vibrational resonance can create new photons.
•Industrial and professional societies have brought into being (or existence) a wide variety of standards.
•Where the valley is narrow the earthflow toe forms a dam, sometimes creating a lake.
•To build up (or produce) sufficient pressure so as to ensure...
•These forces cannot develop torque.
•If the rotor is given the shape of a polygon, the lines of force exert the desired torque.
•The detonation wave upon impacting the wave shaper generates a shock wave.
•The heat generated by magnetization...
•The feedback generates parasitic laser oscillations.
•The resistance element generates precision voltages.
•The use of a driving belt could give rise to vibration.
•The model was rotated in a centrifuge to induce centrifugal forces.
•When a current passes through a wire, it sets up a magnetic field around the wire.
•The magnetic field sets up a magnetomotive force.
•The flywheels set up in the spring-mounted screen a motion which...
•The heating of the coils sets up a ventilating draught.
•The object of the experiment is to build up a high current of charged particles.
•The gradient of viscous shear stresses establishes a steady-state concentration gradient.
•These energy transitions give rise to pockets of photons.
•This brings with it acute problems of electrical interference.
•In the past 20 years the electronics industry has generated many completely new technological systems.
•The media bring into existence and cultivate a new form of common consciousness.
II•An instrument has been created (or devised) for...
•The research staffs are evolving workable designs.
•The engineers have come up with an improved technique for...
•He originated the projection method.
Русско-английский научно-технический словарь переводчика > создавать
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2 Priestman, William Dent
SUBJECT AREA: Steam and internal combustion engines[br]b. 23 August 1847 Sutton, Hull, Englandd. 7 September 1936 Hull, England[br]English oil engine pioneer.[br]William was the second son and one of eleven children of Samuel Priestman, who had moved to Hull after retiring as a corn miller in Kirkstall, Leeds, and who in retirement had become a director of the North Eastern Railway Company. The family were strict Quakers, so William was sent to the Quaker School in Bootham, York. He left school at the age of 17 to start an engineering apprenticeship at the Humber Iron Works, but this company failed so the apprenticeship was continued with the North Eastern Railway, Gateshead. In 1869 he joined the hydraulics department of Sir William Armstrong \& Company, Newcastle upon Tyne, but after a year there his father financed him in business at a small, run down works, the Holderness Foundry, Hull. He was soon joined by his brother, Samuel, their main business being the manufacture of dredging equipment (grabs), cranes and winches. In the late 1870s William became interested in internal combustion engines. He took a sublicence to manufacture petrol engines to the patents of Eugène Etève of Paris from the British licensees, Moll and Dando. These engines operated in a similar manner to the non-compression gas engines of Lenoir. Failure to make the two-stroke version of this engine work satisfactorily forced him to pay royalties to Crossley Bros, the British licensees of the Otto four-stroke patents.Fear of the dangers of petrol as a fuel, reflected by the associated very high insurance premiums, led William to experiment with the use of lamp oil as an engine fuel. His first of many patents was for a vaporizer. This was in 1885, well before Ackroyd Stuart. What distinguished the Priestman engine was the provision of an air pump which pressurized the fuel tank, outlets at the top and bottom of which led to a fuel atomizer injecting continuously into a vaporizing chamber heated by the exhaust gases. A spring-loaded inlet valve connected the chamber to the atmosphere, with the inlet valve proper between the chamber and the working cylinder being camoperated. A plug valve in the fuel line and a butterfly valve at the inlet to the chamber were operated, via a linkage, by the speed governor; this is believed to be the first use of this method of control. It was found that vaporization was only partly achieved, the higher fractions of the fuel condensing on the cylinder walls. A virtue was made of this as it provided vital lubrication. A starting system had to be provided, this comprising a lamp for preheating the vaporizing chamber and a hand pump for pressurizing the fuel tank.Engines of 2–10 hp (1.5–7.5 kW) were exhibited to the press in 1886; of these, a vertical engine was installed in a tram car and one of the horizontals in a motor dray. In 1888, engines were shown publicly at the Royal Agricultural Show, while in 1890 two-cylinder vertical marine engines were introduced in sizes from 2 to 10 hp (1.5–7.5 kW), and later double-acting ones up to some 60 hp (45 kW). First, clutch and gearbox reversing was used, but reversing propellers were fitted later (Priestman patent of 1892). In the same year a factory was established in Philadelphia, USA, where engines in the range 5–20 hp (3.7–15 kW) were made. Construction was radically different from that of the previous ones, the bosses of the twin flywheels acting as crank discs with the main bearings on the outside.On independent test in 1892, a Priestman engine achieved a full-load brake thermal efficiency of some 14 per cent, a very creditable figure for a compression ratio limited to under 3:1 by detonation problems. However, efficiency at low loads fell off seriously owing to the throttle governing, and the engines were heavy, complex and expensive compared with the competition.Decline in sales of dredging equipment and bad debts forced the firm into insolvency in 1895 and receivers took over. A new company was formed, the brothers being excluded. However, they were able to attend board meetings, but to exert no influence. Engine activities ceased in about 1904 after over 1,000 engines had been made. It is probable that the Quaker ethics of the brothers were out of place in a business that was becoming increasingly cut-throat. William spent the rest of his long life serving others.[br]Further ReadingC.Lyle Cummins, 1976, Internal Fire, Carnot Press.C.Lyle Cummins and J.D.Priestman, 1985, "William Dent Priestman, oil engine pioneer and inventor: his engine patents 1885–1901", Proceedings of the Institution ofMechanical Engineers 199:133.Anthony Harcombe, 1977, "Priestman's oil engine", Stationary Engine Magazine 42 (August).JBBiographical history of technology > Priestman, William Dent
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3 большой
•Amply-dimensional flywheels...
•This small grader is built to handle those jobs for which a full-size grader would be an extravagance.
•A major installation such as our laboratory...
•A sizable arc forms between the contacts.
•The solar system may remain in existence without major changes for... additional years.
•Metal is not believed to make much ( of a) contribution to the interior material of the mantle.
* * *Большой -- considerable, substantial, significant, large, major, great; sizable, marked (ощутимый, заметный); extreme (очень большой); wide (широкий)The initial conditions on these numericial solutions were altered to impart a sizeable value to the initial derivative of outlet flowrate.Русско-английский научно-технический словарь переводчика > большой
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4 большой
•Amply-dimensional flywheels...
•This small grader is built to handle those jobs for which a full-size grader would be an extravagance.
•A major installation such as our laboratory...
•A sizable arc forms between the contacts.
•The solar system may remain in existence without major changes for... additional years.
•Metal is not believed to make much ( of a) contribution to the interior material of the mantle.
Русско-английский научно-технический словарь переводчика > большой
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