GOST 27474-1987 Test methods for evaluating resistance to tracking and erosion of electrical insulating materials used under severe ambient conditions《电绝缘材料 防止在不良环境条件下产生导电桥和浸蚀的试验方法.pdf

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GOST 27474-1987 Test methods for evaluating resistance to tracking and erosion of electrical insulating materials used under severe ambient conditions《电绝缘材料 防止在不良环境条件下产生导电桥和浸蚀的试验方法.pdf_第1页
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