词语采煤
解释coal mining
coal mining〔名词〕采煤,煤矿开采,采煤工程详细»
coal mining采煤详细»
采煤coal getting;coal mining;coal pulling;coal winning;recovery of coal;win;win the coal详细»
采煤coalcutting详细»
采煤coal pulling详细»
采煤coal cutting详细»
采煤recovery of coal;win详细»