短语词组短语slope e angle 坡度角;倾斜角slope climbing angle 爬坡角slope wall angle of open -pit 露天矿边坡角slope -angle-increasing method 坡角增大法Top slope angle 刀齿顶刃倾角seabed slope angle 海底倾斜角final slope angle 最终边坡角natural slope angle 堆积角 返回 slope angle