Scientists simulated the ignition of the rocket and the in-flight moves of the capsule to test how the observation, control and communication systems at the Jiuquan Satellite Launch Center work.

科学家们模拟了火箭点火和舱体飞行，以演示届时酒泉卫星发射中心观察、控制和联络系统的运转情况。

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Even if ET has mastered building a rocket that can travel at the speed of light, he may be lying dead inside a weakened craft whose navigation systems have short-circuited.

即使ET已经掌握能够光速航行的火箭技术，他也可能已横尸于损坏的飞船之中，它的航行系统已经短路。

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As part of this exploration plan, 2015 is now the deadline for finalizing a heavy-lift rocket design, and there will be renewed focus on advanced propulsion systems and other technologies.

探索计划要求重载火箭的研制需要在2015年之前完成，到时还将会重新集中研发推进系统及其他科技项目。

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The Russian newspaper Nezavisimaya Gazeta reported that Armenian military experts were trained in the use of advanced rocket systems last year at a Russian missile range.

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Because of their light weight, strength and high melting point, ceramics are now incorporated into such military items as helicopter armor and parts in rocket guidance systems.

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Israel has rejected relatively inexpensive existing anti-rocket and mortar systems that could provide immediate protection to Sderot among other places.

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