three-phase non-rewirable plug with earthing-contact
三相四极不可拆线插头 Three-phase Non-rewirable Plug with Earthing-contact 单相两极双用明装插座 Single-phase Surface-type Flat-and-round Two-pole Socket-outlet ..
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three-phase non-rewirable plug with earthing-contact
带接地接点的三相不可换线插头
以上为机器翻译结果，长、整句建议使用 人工翻译 。