There are only a few of these, and their reliability is questionable.
这些仅仅少量，而且它们的可靠性是可疑的。
There are still many problems using current reliability management method for liquid rocket engine.
当前的可靠性增长管理方法在液体火箭发动机中的应用存在诸多问题。
There are many factors which affect the reliability of transportation production system.
影响运输生产这个系统可靠性的因素很多。
There are many factors which affect the reliability of transportation production system.
影响运输生产这个系统可靠性的因素很多。
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