航天火箭

With the development of aerospace technique, an ablative cooling technique obtained is widely applied.

随着航天技术的发展，烧蚀冷却技术在空间化学小推力液体火箭发动机上得到了广泛的应用。

Tungsten –Copper alloy is the composite of Tungsten and Copper which own the excellent performances of Tungsten and Copper, such as heat-resistant, ablate-resistant, high-intensity,high-density, excellent thermal and electrical conductivity. It is easy to be machined. It is used widely in such industries as engine, electric power, electron, metallurgy, spaceflight and avigation.

钨铜材料是钨和铜的一种合金，综合了钨和铜的优点，耐高温、耐电弧烧蚀、强度高、比重大、导电、导热性好，易于切削加工，并具有发汗冷却特性，作为真空触头材料、电极材料、电子封装材料以及火箭、导弹特殊用途材料等广泛应用于机械、电力、电子、冶金、航空航天等工业。

New requirements for defense equipment development and production of supporting tasks, such as long-II bundle rockets, manned space projects.

国防装备等所需新品研制及生产配套任务，如长二捆火箭，载人航天工程等。

Therefore the United Sates and Great Britain known as Gog and Magog were the first to introduce aircraft and space rocket.

因此，在美国和英国被称为戈格和玛各首先介绍飞机和航天火箭。

The evolution course of Chinese solid rocket propulsion technology for space missions since 1950s is presented.

叙述了 2 0世纪 5 0年代以来中国航天固体火箭推进技术的发展历程，介绍了 9种最具代表性的固体火箭发动机的技术特征、研制过程、地面试验和飞行情况，这些发动机分别应用于中国的探空火箭、运载火箭上面级和应用卫星变轨系统。

Dr. Tsien's father's cousin was Tsien Hsue-shen, father of Chinese rocketry and a major figure in the missile and space programs of both the United States and China, who contributed greatly to China's aerospace industry.

钱博士的叔父是钱学森，他是中国火箭之父，同时也是美国和中国在导弹和航天领域的重量级人物，他为中国航空航天工业做出了巨大贡献。

For example, the invention of television and space rocket have opened a new era for mankind.

例如，电视的发明和航天火箭开辟一个新时代的人类。

Through malfunction of the tests of 810 Research Institute, the combustion performance of the hybrid motor and model about regression rate have been studied in the dissertation. The main aspects are as follows: The performance of the HNO3+N2O4 -HTPB hybrid rocket motor were all discussed.

本文结合航天科技集团公司810研究所正在研制的AK-20L/HTPB+Al组合固液火箭发动机，开展了固液火箭发动机混合燃烧特性的数值模拟工作，在此基础上给出固体燃料退移速率预示模型及预示结果。

It has reference for the same model astronautical rocket of China..

对我国同类型航天火箭的制造有参考和借鉴意义。

February 15, 1996, the Long Route B first launch to the International Telecommunications Satellite 708, Rockets 22 seconds after take-off attitude out of control, fully loaded with fuel into the rocket launch tower from 1850 m on the slopes, the location of the explosion just in the space program Technical personnel living quarters near the strong blast destroyed the moment the steel and concrete construction, was killed 6 people and injuring 57 people, a rocket designed specifically for the flight trajectory, a senior engineer at the expense of on the spot.

1996年2月15日，长征三号乙首飞发射国际通信卫星708，火箭起飞22秒以后姿态失控，满载燃料的火箭撞向距发射塔架1850米的山坡上，爆炸的地点正好在航天工程技术人员住的宿舍附近，强烈的气浪瞬间冲垮了钢筋水泥的建筑，死亡6人、伤57人，一位专为火箭设计飞行弹道的高级工程师当场牺牲。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。