无导电尘埃
Non-conducting dust
以上为机器翻译结果，长、整句建议使用 人工翻译 。
断路器应安装在无爆炸危险和无导电尘埃、 无足以腐蚀金属和破坏绝缘的地方；
There must be not any explosive medium, and there must be not any gas which would corrode metal or any conducting dust which would destory the insulation;
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