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珍珠怎么量大小
更新时间: 2020-11-10 00:00:00  

珍珠量大小,可以用游标卡尺量珍珠的直径,为了更准确可以多量几次算平均值,用游标卡尺测量戒指和珍珠大小时,要注意游标卡尺的主尺和游标上有两副活动量爪,分别是内测量爪和外测量爪,内测量爪通常用来测量内径,而外测量爪通常用来测量长度和外径。因此,如果想测量戒指和珍珠大小的外径就用外测量爪。

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