?粗略的场地平整

rough grading 粗略的场地平整 Route Survey A survey of existing or alignment of route survey 现状测量的线路测量或道路定线测量 ..

?初步土方平整

... grading curve 颗粒级配曲线,粒度曲... rough grading 初步土方平整... machine grading 机械平地 ...