The Americans and Russians have launched many rockets into space.

美国人和俄罗斯人已把许多火箭到太空。

A rocket was fired at the moon.

火箭到月球上。

The rocket boosts the astronaut into space.

这火箭能把宇航员送入太空。

The rocket lifted off from its launching pad.

火箭从它的台上出。

I saw the launch of the rocket yesterday.

我昨天看了火箭。

She was fascinated at the spectacle of a rocket launching.

她被火箭的壮观场面强烈地吸引住了。

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

早期军用火箭的试验为太空飞行奠了基础。

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

火箭于星期五中午。

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

因电脑出故障，这次火箭飞行只好中辍。

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

离火箭仅有几秒钟了。

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

一火箭从欧洲的某地到空中。

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器，它可载40三米的火箭。

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。

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.

护手装有火焰投器和可拉紧的绳勾，膝甲装有火箭标器。

The train rocketed downhill.

火车急速滑下坡。

The rockets flared a warning.

火箭出闪光警告。

He rocketed to star overnight.

他一夜之间成了明星。

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动机推力室的工作过程进行了研究。