Key Station Line refers to the circuit which extends from the key set to the key system common equipment.

控制台线路指的是从电键到关键系统普通设备的扩展的电路。

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The remote simple substation realized electric quantity collection through designing and rebuilding the existing wattmeter, transmission approach and key station.

对现有电表、传输途径、 主站系统进行设计改造实现远距离简易变电所电量采集。

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Rendezvous and docking is a key skill that we must master for building the space station. If this step is taken then the space station is around the corner.

交会对接，是建造空间站必须要掌握的一项关键技术，迈出这一步，空间站指日可待。

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"Robotics is playing a key role aboard the International Space Station and will be critical in our future human exploration of deep space, " said Michael Gazarik, director of NASA's Space Technology Program.

ENGADGET: NASA and IHMC building X1 exoskeleton to give us a lift, keep us fit in space and on Earth

In New York, City "operation Atlas" has deployed armed police at key locations like the Stock Market and Pennsylvania Station.

BBC: US prepares for terror attacks

The station lies close to the athletes' village and key venues such as Celtic Park, the National Indoor Sports Arena and Sir Chris Hoy Velodrome.

BBC: Refurbished Dalmarnock station to reopen on 20 May