煤二次開采 的英文怎麼說

中文拼音 [méièrkāicǎi]
煤二次開采 英文
secondary coal recovery
  • : 名詞(黑色固體礦物) coal
  • : Ⅰ數詞(一加一后所得) two Ⅱ形容詞(兩樣) different
  • : Ⅰ名詞1 (次序; 等第) order; sequence 2 [書面語] (出外遠行時停留的處所) stopping place on a jou...
  • : 采名詞(采地) feudal estate
  1. Quadratic function analysis of greatest subsidence angle during mining pitching or steerly pitching coal seam

    大傾角最大下沉角的插值分析
  2. Because the upper rocks are influenced after the mining lower coal, they glide along the primary bursting surface, and the upper rock layers can form surface - contact fabric by its shear and bulge function

    作者認為,下後上覆頂板巖層受到擾動,其破壞移動主要是沿原有破裂面滑移,由於剪脹的作用,上覆巖層能夠形成面接觸的覆巖基本結構特徵。
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