The system consists of two air vehicles and a ground control unit.
该系统包含两个飞行器和一个地面控制单元。
Theory of key stratum in ground control.
岩层控制的关键层理论。
The ground control system is also ready.
地面指挥系统也做好了准备。
But then the ground control heard the voices of the astronauts.
但是之后地面控制中心就听到了宇航员的声音。
这里是地面控制台。
Ground control is one of the major problems in deep mining.
地压控制是深部采矿的主要问题之一。
Upon touch down, the flight is then handed off to Ground Control.
飞机接地，即被移交给地面管制单位。
Upon touch down, the flight is then handed off to Ground Control.
飞机接地，即被移交给地面管制单位。
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