Relative positional error may have different meanings with the different new datum choosing.
随着新基准的不同选择，相对点位误差可有多种含义。
The utility model relates to a symmetrical characteristic detector for the axial key groove which can measure the positional error of the machine parts.
一种测量机械零件位置误差的轴键槽对称度检测仪。
The utility model relates to a symmetrical characteristic detector for the axial key groove which can measure the positional error of the machine parts.
一种测量机械零件位置误差的轴键槽对称度检测仪。
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