The big effect of space environment upon launch and operation of space vehicle are discussed.
空间环境条件对地面航天器发射和空间航天器系统运行有很大影响。
The space environment factors, which are necessary for the design, test and operation of space vehicle, are developed.
提出了在航天器设计、飞行试验与运行过程中，必须考虑可能带来影响的空间环境条件因素。
The counting backward aloud from an arbitrary starting number to indicate the time remaining before an event or operation, such as the launching of a missile or space vehicle.
的翻译是：从一个落后的数数声，任意起始编号指示剩余的时间事件发生前的一或操作，如发射导弹或航天器。
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