而且，他们只能在没有指令舱导航设备的情况下完成这一动作。
And they had to make this move without the navigational equipment in the command module.
水下管道干式维修系统的基本设备是一套大型水下干式舱。
The "Underwater Pipeline Dry Repair System" is a National "863" Hi-tech project.
水下管道干式维修系统的基本设备是一套大型水下干式舱。
The "Underwater Pipeline Dry Repair System" is a National "863" Hi-tech project.
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