positional tolerance zone

• 位置度公差带

positional tolerance zone的用法和样例：

例句

1. If the angle of the slot needs to be controlled better than the angularity provided by the position tolerance, an angularity tolerance may be added as a refinement.
   若为了更好地控制槽的角度，可在给出位置度公差的基础上，还可给出倾斜度公差要求。