短语词组短語slope e angle 坡度角;傾斜角slope climbing angle 爬坡角slope wall angle of open -pit 露天鑛邊坡角slope -angle-increasing method 坡角增大法Top slope angle 刀齒頂刃傾角seabed slope angle 海底傾斜角final slope angle 最終邊坡角natural slope angle 堆積角 返回 slope angle