The Americans and Russians have launched many rockets into space.

美国人和俄罗斯人已把许多火箭发射到太空。

The rocket boosts the astronaut into space.

这火箭能把宇航员送入太空。

A rocket was fired at the moon.

火箭发射到月球上。

The rocket lifted off from its launching pad.

火箭从它的发射台上发射而出。

I saw the launch of the rocket yesterday.

我昨天看火箭发射。

She was fascinated at the spectacle of a rocket launching.

她被发射火箭的壮观场面强烈地吸引。

Early experiments with military rockets prepared the ground for space travel.

期军用火箭的试验为太空飞行奠基础。

The rocket is due to lift off at noon on Friday.

火箭于星期五中午发射。

The rocket flight had to be aborted because of difficulties with computer.

出故障，这次火箭飞行只好中辍。

The huge rockets were fired into the air from a place in Europe.

一枚枚巨型火箭从欧洲的某地发射到空中。

There’s only a few seconds to go before the rocket takes off.

离火箭发射仅有几秒钟。

This will allow the rocket's oxidiser tank to expand when it is full.

这使得飞船的氧化罐在满载时产生膨胀。

His favourite gadget is a Russian-made rocket launcher which holds 40 three metre-long missilles.

他最喜欢的还是那个俄制的火箭发射器，它可载40枚三米的火箭。

The dog rocketed into the darkness.

狗飞奔着消失在黑暗中。

His gauntlets contain a flamethrower, and a whipcord lanyard launcher.His kneepads conceal rocket dart launchers.

护手装有火焰投射器和可拉紧的绳勾，膝甲装有火箭标发射器。

The train rocketed downhill.

火车急速滑下坡。

He rocketed to star overnight.

他一夜之间成明星。

The rockets flared a warning.

火箭发出闪光警告。

The world urban population is rocketing upwards at a rate of 6.5 per cent per year.

世界城市人口以每年6.5％的速度急速上升。

In this paper,the characteristics of tripropellant rocket engine was studied in two different ways:experiment and simulation .

本文从实验、仿真两个方面对三组元液体火箭发动机推力室的工作过程进行研究。