cleaning the hole meaning in Chinese
洗井
Examples
- Clogged or cave - in of the hole , can lead to a stuck drill . it is best therefore , to cleans the hole regular intervals , by carrying out air - blowing with the rock drill
因为堵块和空穴都可能导致卡钻，因此应定期采用冲击器强吹，定期清洗孔底。