Test method for physical - chemical properties of electrical carbon product . pull strength of brush connection 电炭制品物理化学性能试验方法.电刷软接线的脱出拉力
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Test method for physical - chemical properties of electrical carbon product . connection electrical resistance of brush flexible connection 电炭制品物理化学性能试验方法.刷体与软接线联接处的联接电阻