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带传动 平带和带轮 尺寸和公差
Belt drives--Flat transmission belts and corresponding pulleys--Dimensions and tolerances
价格：￥0.00
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带传动 普通及窄V带传动用带轮(有效宽度制) 槽形检验
Belt drives--Pulley for classical and narrow V-belts drives (system based on effective width)--Geometrical inspection of groove
价格：￥0.00
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带传动 普通及窄V带传动用带轮(基准宽度制) 槽形检验
价格：￥0.00
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