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For the tool to meet double insulation safety standards it must be marked on the case 'double Insulated.

对于符合双重绝缘安全标准的工具，必须在其外壳上标注“双重绝缘”字样。

youdao

For the tool to meet double insulation safety standards it must be marked on the case 'double Insulated.

对于符合双重绝缘安全标准的工具，必须在其外壳上标注“双重绝缘”字样。

youdao