hole spacing

例句：

1. 1. The hole spacing in the wall is too small for a pencil.
   墙上的孔间距太小，铅笔插不进去。
2. 2. The engineer carefully measured the hole spacing to ensure accuracy.
   工程师仔细测量了孔间距以确保准确性。
3. 3. The holes spacing on the surface of the metal sheet are evenly distributed.
   金属板表面的孔间距均匀分布。