瓦銅礦 的英文怎麼說
中文拼音 [wǎtóngkuàng]
瓦銅礦
英文
tile ore-
In order to avoid gas blast because of short circuit, it should popularize shielded mine cable under coal mine. except insulated surface of part products adopting tinnint brass wires and nylon wires, its protective shield adopting conducting rubber and shielded layer which transition resistance not bigger than 3k. the protective layer adopt high machinery chloroprene rubber which is fireproof
為防止電纜相間短路而造成瓦斯氣體爆炸，在煤礦井下應大力推廣使用屏蔽礦用電纜，除部分產品的絕緣表面採用鍍錫銅絲和尼絲交叉紡織之外，其外屏蔽型電纜的保護屏蔽採用導電橡皮及屏蔽層，其屏蔽層的過渡電阻不大於
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