航天飞机的主发动机现在是免费的。
我们在启动主发动机。
新型运载火箭将由飞船助推火箭、燃料箱、主发动机以及月球火箭发动机组成。
They would be built from shuttle booster rockets, fuel tanks and main engines, as well as moon rocket engines.
它还配备了辅助动力装置，它的权力的所有系统，当主发动机是关闭的。
It is also fitted with auxiliary power unit, which powers all systems, when the main engine is turned off.
介绍了主发动机加助推器和简易控制方法实现固体火箭等高飞行的设计方案。
The tentative design of constant altitude flight solid rocket composed of the sustainer the booster and its simple control method is presented.
介绍了主发动机加助推器和简易控制方法实现固体火箭等高飞行的设计方案。
The tentative design of constant altitude flight solid rocket composed of the sustainer, the booster and its simple control method is presented.
请介绍一下其中一个主要发动机类型主发动机是大口径两杆横梁与涡轮式收费制度。
Please introduce one type of the main engine the main engine is large bore two-stroke crosshead type with turbo charging system.
这一个问题被来自火箭旋转稳定发动机和主发动机的气体加剧，在那里他们的力量矢量对抗。
This problem was exacerbated by gas pressure from the rocket's spin motor and main motor where their force vectors were in opposition.
伍尔弗汉普顿工厂也为欧洲台风战斗机提供主飞行系统，也为美国STOVL版联合攻击战斗机劳斯莱斯的引擎提供主发动机提升系统。
Wolverhampton also provides primary flight controls for the European fighter, Typhoon, and a main engine lift system for the Rolls-Royce engine on the STOVL version of the U.S.Joint Strike fighter.
伍尔弗汉普顿工厂也为欧洲台风战斗机提供主飞行系统，也为美国STOVL版联合攻击战斗机劳斯莱斯的引擎提供主发动机提升系统。
Wolverhampton also provides primary flight controls for the European fighter, Typhoon, and a main engine lift system for the Rolls-Royce engine on the STOVL version of the U. S. Joint Strike fighter.
这些子级上安装了瓦·彼·格鲁什科设计的四推力室主发动机和谢·帕·科罗廖夫设计的用来控制推力矢量的新型姿态控制发动机。
The main four-chamber engines designed by V. P. Glushko and new control engines from s. P. Korolev for controlling the thrust vector were installed in these units.
汽车发动机用的化油器的组成通常包括燃油室、阻风门、怠速量孔、主量孔、空气节流喉管和加速泵。
Carburetors for automobile engines usually contained a storage chamber for liquid fuel, a choke, an idling jet, a main jet, an airflow restriction, and an accelerator pump.
主电力是由两个发动机驱动发电机供应三相，115伏400周期交流电。
Primary electrical power is provided by two engine driven generators which supply three-phase, 115 volt 400 cycle alternating current.
为了把发动机对准正确的方向，主天线不会对准地球，从而无法传输更精细的数据。
To point the engine in the correct direction, the main antenna will not be pointed at Earth, preventing more detailed telemetry.
利用高温云纹干涉法对航空发动机叶片定向结晶材料的高温蠕变进行了测试，获得该材料不同主方向的高温蠕变性质和规律。
The high temperature creep deformation of certain material used in aerial engines lamina was detected by means of high temperature moire interferometry in this paper.
使用辅助增压泵可降低贮箱压力，并提高发动机主泵的入口压力，以保证主泵在没有汽蚀的条件下可靠工作；
The pressure in rocket tanks and the pressure on the inlet of main pumps can be increased by using boost pumps, so as to ensure that the main pumps can work reliably without cavitation erosion.
对欧洲必须的下一代发动机的开发之一是主引擎的新设计。
One of the developments that will be necessary for Europe's Next Generation Launcher (NGL) is a new design of main engine.
建立了某涡扇发动机气动热力学模型和该型发动机综合电子调节器、主燃油泵调节器的实验室工作环境。
Thermodynamics model of some turbofan engine was established. Working condition of Engine Electronic Controller (EEC) and main fuel pump regulator in laboratory were set up.
天然气供给方式，主副燃烧室通道直径和进气温度对压缩着火天然气发动机起动，燃烧和排放的影响也作了研究。
The effect of the natural gas supply method, passage diameter and heated temperature of intake air on the ignition, combustion and emission are studied.
在拨起发动机的主脚架后慢慢起动发动机。
第八名：贝尔uh - 1IROQUOIS(惠)是一种军用直升机搭载单涡轮轴发动机，具有双桨叶主旋翼和尾桨。
Number 8. BELL UH-1 IROQUOIS (HUEY) is a military helicopter powered by a single turboshaft engine, with a two-bladed main rotor and tail rotor.
所述泵系统能够包括用于驱动主增压泵的第一发动机(40)，和用于驱动辅助泵的第二发动机(68)。
The pump system can include a first engine (40) to drive the main boost pump and a second engine (68) to drive the satellite pumps.
该涡轮发动机包括限定一压缩机室（22）的主壳体（20）和安装在主壳体上的进气壳体（24）。
The engine may include a main housing (20) defining a compressor compartment (22) and an air intake housing (24) mounted to the main housing.
通过与试验结果的比较，证明了在较大的主气源压力范围内计算结果合理，其推力计算的精度可满足火箭弹姿控发动机工程计算的要求。
In comparison with the results of test, the results of numerical computation are reasonable, and the precision of thrust calculated by numerical computation can meet then...
通过与试验结果的比较，证明了在较大的主气源压力范围内计算结果合理，其推力计算的精度可满足火箭弹姿控发动机工程计算的要求。
In comparison with the results of test, the results of numerical computation are reasonable, and the precision of thrust calculated by numerical computation can meet then...
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