trial hole meaning in Chinese
试孔
试验孔
试验性钻孔
Examples
- Confirm the location of the underground electricity cable by exposing the cable using hand - dug trial holes should the depth of excavation be 450 mm or more under the ground
如地下挖掘深度为450毫米或以上，必须透过手挖试孔使地下电缆显露以确定电缆的位置。