用coal cutting造句子，“coal cutting”造句
來源：國語幫 5.48K
3、The method of coal cutting adopts deep-hole blasting and realizes no people in the face, this decreases risk when workers are working in the face.
1、The chain guide frame of coal cutting machine is produced with metabainited cast steel.
2、To make shaft coal cutting planning is a multi nodal decision making course for it's intricacy of influencing factor.
