Electronic parts: heat sink copper holder, fiber coupler body.
电子零件：散热器铜座，光纤连结器本体。
Familiar with railway mechanical metal process, such as production, manufacture and repair of the coupler, buffer, car-body, bogies and other railway equipments.
熟悉铁路机械金属工艺，如车钩、缓冲器、车体、转向架等铁路机车车辆设备的生产、制造与检修。
Loosen bolts on groove coupler and remove groove coupler and cover plate from valve body.
松开沟槽连接器上的螺栓，从阀体上拆卸沟槽连接器和盖板。
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