A test system used in the test of key mechanical parameters of the solar wing hinge module under thermal vacuum environment was developed.

太阳翼铰链组件测试系统是专门用于太阳翼铰链组件热真空环境下各种重要力学参数的测试。

youdao

I think that people are going to look back at today as a hinge (key, important) period in the country's history.

我认为将来人们回过头来看，会认为我们今天的这段历史是美国国家历史上非常关键的一段。

youdao