导体可说是不良绝缘体，因为它的电阻很低。
A conductor is a poor insulator because it has a low resistance to such flow.
火灾主要是由吸烟者、绝缘不良和孩子玩火柴引起的。
Fire emergency was arose by smoker, badly insulation and children paly match mostly.
火灾主要是由吸烟者、绝缘不良和孩子玩火柴引起的。
Fire emergency was arose by smoker, badly insulation and children paly match mostly.
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