Mains voltage heating cables shall be adequately insulated and installed in complinance with the relevant Regulations.

供电电压的电热线应依照有关条例恰当地绝缘和装设。

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Mains voltage heating cables shall be adequately insulated and installed in complinance with the relevant Regulations.

供电电压的电热线应依照有关条例恰当地绝缘和装设。

youdao