expected gradient of river bed的意思|示意

期望坡度 期望品质水平，期望质量水平 expected quality level (EQL) 期望坡度 expected gradient of river bed 期望好运持续 crowd her luck ;crowd his luck ;crowd my luck ;crowd our luck ;crowd their luck ;crowd your luck ;press he...

河床整治后的预期坡度 ... evolution of river bed 河床演变 expected gradient of river bed 河床整治后的预期坡度 gradient of river bed 河床坡降 ...