英语词汇ultra large coal怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	ultra large coal
释义	ultra large coal 简明释义特大块煤网络释义 1 [矿业]?特大块煤 ... 套管靴 casing shoe 特大块煤 ultra-large coal 特伦普分选点 Tromp cut-point ... 短语 1 ultra large coal 特大块煤 2 ultra large coal detail 特大块煤双语例句 1 The feasibility of the protective coal pillar mining in the artificial inclined steep drift in the thick (ultra thick) coal seam of a large slope is discussed. 论证了急倾斜厚(特厚)煤层伪斜上山保护煤柱回收的可行性。
随便看	constancy of level constancy of measuring instrument constancy of organism constancy of pitch constancy of purpose constancy of sign constancy of species constancy of temperature constancy of test condition constancy of the cell constancy of variance constancy of volume constancy of vorticity constancy of winds constancy phenomena constancy principle Constand Constans constans i constant Constanta constant aberration constant absolute amount constant acceleration constant-acceleration cam

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