已知二孔直径D=20,二孔孔距L=20。现用下量脚宽度T为10mm的游标卡尺测量二孔 发布时间:2018-02-10 00:06 │ 来源:www.tikuol.com 题型:问答题 计算题 问题: 已知二孔直径D=20,二孔孔距L=20。现用下量脚宽度T为10mm的游标卡尺测量二孔外侧的孔壁间距,卡尺读数M应为多少?
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