“coal cutting”可以造什么句，coal cutting造句
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2、To make shaft coal cutting planning is a multi nodal decision making course for it's intricacy of influencing factor.
1、The chain guide frame of coal cutting machine is produced with metabainited cast steel.
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.
