development roadway造句

repair technololgy for mine failured development roadway in guo'erzhuang mine
郭二庄矿开拓大巷破坏治理技术
applied study of secondary support technique for development roadway in soft coal seam
软煤层开拓巷道二次支护技术的研究
application on bolting with wire mesh technology of development roadway in district dip of
三软煤层采区下山开拓巷道锚网支护应用
application on bolting with wire mesh technology of development roadway in district dip of quot; three soft quot; coal seam
三软煤层采区下山开拓巷道锚网支护应用
It's difficult to find development roadway in a sentence. 用development roadway造句挺难的