单词	propulsive
释义	propulsionpro‧pul‧sion /prəˈpʌlʃən/ noun [uncountable] technical Word Origin WORD ORIGINpropulsion Origin: 1600-1700 Latin propulsus, past participle of propellere; ➔ PROPEL Examples EXAMPLES FROM OTHER DICTIONARIES jet propulsion EXAMPLES FROM THE CORPUS As with the service propulsion system, the propellants were force-fed to the engine by pressurized helium from a storage tank. But power for activities in the belt and for propulsion of spacecraft is harder to find. First and most radical, a new means of propulsion other than the internal combustion engine might be considered. The most significant of these may be the use of helium-3 in spacecraft propulsion, in a fusion rocket. The pods themselves were quite complex, but essentially they were multi-skinned torpedoes equipped with minimal propulsion and life-support systems. Their fins and tail are freed for guidance and rapid propulsion. Their swim fins are extra long to provide maximum propulsion and minimum strain. This kind of propulsion system is called a solar thermal rocket. word sets WORD SETS► Mechanical ball bearing, nounbelt, nouncog, nouncombustion chamber, nounconveyor belt, nouncoolant, nouncooling system, nouncrank, verbdifferential, noundisengage, verbdismantle, verbdrive, nounfour-stroke engine, nounfuel cell, nounfulcrum, noungear, nounheat pump, nounhydraulic, adjectiveinertia, nounmechanical, adjectivemechanical engineering, nounmill, nounmillstone, nounmillwheel, nounmomentum, nounmotive, adjectiveneutral, nounnuclear reactor, nounoil pan, nounpivot, nounpropulsion, nounpulley, nounpump, nounrace, verbratchet, nounreactor, nounregulate, verbretract, verbrev, verbrev, nounrotor, nounselector, nounstarter motor, nounstress, nounstressed, adjectivestrip, verbsump, nounsupercharged, adjectivetemplate, nountop gear, nountorque, nountwo-stroke, adjectiveuniversal joint, nounvalve, nounwheel, nounwinch, nounwindlass, noun Collocations COLLOCATIONS FROM THE ENTRY► rocket/wind/nuclear/jet propulsion ► means of propulsion  research into liquid hydrogen as a means of propulsion COLLOCATIONS FROM THE CORPUSNOUN► jet · Somewhere inside itself, the thing had a sort of jet propulsion.· Both creatures can, like the nautilus, use jet propulsion on occasion. ► rocket · Remember that the principle of rocket propulsion simply requires high-speed molecules to push against the rocket.· This is the secret of rocket propulsion. ► system · As with the service propulsion system, the propellants were force-fed to the engine by pressurized helium from a storage tank.· This kind of propulsion system is called a solar thermal rocket.· Refinements for the propulsion system came from a group working with Kensaku Imaichi at Osaka University.· In terms of the demands placed on spacecraft propulsion systems, Uranus is easiest and Neptune is second.· It also provided the main propulsion system for the Apollo spacecraft.· As it turned out, the propulsion system performed normally.· The Voith Schneider propulsion system provided the high level of manoeuvrability required for port operations and for barge handling in the estuary.· The company said it was selling to concentrate on building tanks, howitzers, propulsion systems and Cosworth engines. the force that drives a vehicle forward → propelrocket/wind/nuclear/jet propulsion research into liquid hydrogen as a means of propulsion—propulsive /-sɪv/ adjective
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