短語詞組短語dip -angle EM system 傾角電磁法系統(tǒng)large dip -angle 大傾角dip direction angle 傾向角dip azimuth angle 傾斜方位角dip p angle 傾角small dip -angle 小傾角big dip -angle strata 大傾角地層 返回 dip angle