... electric rig;电动钻井架 electric rotating switch;电气回转开关 electric service meter;电气维修仪表 ...
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The electric toothbrush comprises a protecting cover, a rotary brush head, a rotating shaft, a power handle and a control switch.
它包括保护罩、旋转刷头、转轴、动力手柄和控制开关。
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