Page two continues with more information on the valve problems that have occurred on Space Shuttle Discovery during its preparation for the STS-119 mission.
第二页继续与更多的阀门，对发现号航天飞机发生在其为STS- 119任务准备问题的信息。
Page two continues with more information on the valve problems that have occurred on Space Shuttle Discovery during its preparation for the STS-119 mission.
第二页继续与更多的阀门，对发现号航天飞机发生在其为STS- 119任务准备问题的信息。
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