Turbopump is an important part in liquid rocket engine.

涡轮泵是液体火箭发动机的重要组成部份。

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It is very important to measure liquid density in cryogenic liquid rocket engine test.

在低温液体火箭发动机的试验中，对液体密度的测量是很重要的。

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Launch capability of liquid rocket engine can be improved by propellant utilization system.

采用推进剂利用系统可以提高运载火箭的发射能力。

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Among those items reportedly slated for decontrol are sensors capable of testing missile silos, high-speed microprocessors with a wide variety of applications for military systems, solid and liquid rocket motors and spacecraft, advanced lasers, electronic navigation equipment, and sophisticated machine tools.

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Liquid-fuelled rocket engines work by mixing the fuel (in this case kerosene) with liquid oxygen at high pressure.

ECONOMIST: On a rotor-blade and a prayer | The

Water from asteroids could be broken down in space to liquid oxygen and liquid hydrogen for rocket fuel.

BBC: Plans for asteroid mining emerge