The present state of non asbestic friction material production in China and requirement in early years of 21st century are presented.
分析了我国非石棉摩擦材料生产
现状及21世纪
求量;
,不燃性The present state of non asbestic friction material production in China and requirement in early years of 21st century are presented.
分析了我国非石棉摩擦材料生产现状及21世纪求量;
明：以
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