短語(yǔ)詞組短語(yǔ)steep -dip critical angle 急斜臨界角steep p dip 急傾斜steep dip narrow vein 急傾斜極薄礦脈steep dip coal seam 急斜煤層steep dip formation 陡傾構(gòu)造steep dip angle 陡傾角steep dip structure 高陡構(gòu)造steep dip and narrow vein 急傾斜薄礦脈 返回 steep dip