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drawing ellipsoid
释义
drawing ellipsoid
Encyclopedia
工学
覆岩下放矿
释
drawing ellipsoid
放出椭球体
自崩落矿块底部放出孔进行放矿时,放出的散体在矿岩堆里原来占据的位置所构成的椭球体形状。
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更新时间:2025/7/2 18:57:04