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阿卡英語 / 查找：“coal seam” [共找到3條結(jié)果]

  • coal seam的音標(biāo)？

    coal seam的音標(biāo)：coal seam的英式發(fā)音音標(biāo)為：[k?ul si:m]coal seam的美式發(fā)音音標(biāo)為：[kol sim]...

  • coal seam造句

    The average UK coal seam is one metre thick.英國(guó)煤層的平均厚度為1米。Coal Mine, its coal seam is easily spontaneous fire.大雁二礦煤種為褐煤, 屬易自燃發(fā)火煤層.Factors affected coal seam permeability change and its law is analyzed.分析了煤層透氣性變化的影響因素及變化規(guī)律...

  • coal seam什么意思？

    n.煤層...