“spontaneous caving method”的概念、定义、翻译、参考文献-科学参考

单词	spontaneous caving method
释义	spontaneous caving method Encyclopedia 工学阶段崩落采矿法释 spontaneous caving method自然崩落采矿法在位于阶段水平矿块的底部开展大面积的拉底，在侧部用巷道和深孔爆破切帮后，矿石在阶段的整个高度上借自重与地压作用逐渐使矿石自然崩落并破碎成适当块度的采矿方法。
随便看	broadcast war in Xi'an incident broad emission line broaden crotch and circle thighs broadening broadening by damping broad-external focus broad halo broad-internal focus broadleaf deciduous forest in temperate zone broad-leaf forest broad leaf weed broad-leaved forest broadleaved weed broadligament pregnancy broad-line radio galaxy broad-line region broad money growth broad network access broadnose sevengill shark broad resonance broad-sense Mathieu function broad-sense selfsimilar process broadside array broad slit drawing broad-spectrum antiviral

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