[矿物]硬煤；无烟煤

硬煤，无烟煤; 白煤

hard coals───[矿物]硬煤；无烟煤

hard clam───文蛤，蚶仔

hard copy───[计]硬拷贝；复印件

hard core───中坚力量；碎砖垫层

hard loan───[金融]硬贷款；[金融]条件苛刻的贷款

hard road───石砾道

hard clams───文蛤，蚶仔

hard cores───中坚力量；碎砖垫层

hard court───铺有混凝土或柏油的网球场

The experiments indicate that the control parameters of crack development induced by hydraulic fracturing have practical meaning for improving the effect of prefracturing design for hard top coal.───试验表明，本文结果中水压裂缝扩展控制参数对改善顶煤预裂设计效果具有实际意义。

The miserable Toad, crouching in the coal-dust, tried hard to think of something to do, with dismal want of success.───可怜的托德蜷缩在煤尘里，拼命想主意，可是苦于想不出来。

The paper describes selection of key equipment and relationship among them in fully-mechanized roof-caving face in hard thick coal seam.───阐述了坚硬厚煤层综放开采关键设备的选型、设备间的工作关系等。

The technology for capturing and storing carbon emitted by hard-coal and lignite plants is still not commercially proven.───而从硬煤和褐煤采矿厂中发展而产生的捕捉和储存炭的技术任然没有被商业化证实。

preparation of hard coal - flocculants for process water - terms , requirements , verification.───无烟煤的制备。生产用水的絮凝剂。术语要求和验证。

SOLID MINERAL FUELS. SAMPLING METHODS FOR HARD COAL AND LIGNITES. METHODS TO DETECT THE EXISTENCE OF SYSTEMATIC ERRORS.───固体矿物燃料.硬煤和褐煤取样方法.系统误差的检查方法

The coal-and-lumber dealer and the cattle shipper sat on opposite sides of the hard coal-burner, their feet on the nickelwork.───煤炭木材交易商和牲畜托运商，在无烟煤炉两边相对而坐，脚搁在炉壳上。

Solid mineral fuels - Hard coal - Determination of Hardgrove grindability index.───固体矿物燃料.硬煤.磨碎指数的测定

SOLID MINERAL FUELS. METHOD OF SAMPLING OF HARD COAL AND LIGNITE. SAMPLING PROCEDURE.───固体矿物燃料.硬煤和褐煤取样方法.取样方法