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标题: 胶圈硬度越高,挤压量就要越大? [打印本页]

作者: a120998589    时间: 2017-1-21 10:52
标题: 胶圈硬度越高,挤压量就要越大?

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怎么胶圈硬度越高,挤压量就要越大?这表是不是有错误?





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