中文翻译与英英解释

硬煤，无烟煤。

hard:    adj. 1.硬的，坚固的 (opp. soft)。 2 ...

coal:    n. 1.煤，煤块，煤堆。 2.〔pl.〕〔美国〕(一堆 ...

a hard natural coal that burns slowly and gives intense heat
同义词：anthracite, anthracite coal,

例句与用法

Hard coal - determination of moisture - holding capacity
无烟煤.最大保水能力测定

Preparation of hard coal ; preparation plants ; flowsheets
选煤.选煤设备.工艺流程图

Preparation of hard coal ; preparation plants ; process control
选煤.选煤厂.过程控制

Hard coal lignite , overburden , limestone , ash slag
烟煤褐煤剥离物石灰石灰渣矿渣

Mine plans - petrography - part 5 : hard coal mining
矿山平面图.岩相学.第5部分:煤矿

Hard coal - froth flotation testing - release evaluation
硬煤.泡沫浮选试验.释放评价

Soft coal burns with more flames than hard coal
烟煤燃烧时火焰较无烟煤多。

Preparation of hard coal ; preparation plants ; equipment monitoring
选煤.选煤厂.设备监控

Preparation of hard coal ; terms relating to processes
选煤.工艺流程术语

Preparation of hard coal - preparation plants - part 1 : planning
选煤.选煤设备.第1部分:计划