动力平地机平地机具
motor grader levelling implement
水田平地机
land leveler for lady field
激光平地机
Laser land leveling machine
Laser leveling system
激光平地
Laser-controlled land leveling
laser controlled land leveling
laser flat land
DFB光纤激光水听器
DFB fiber laser hydrophone
层拉平水平切片
horizontal slice of level flattening
成就动机水平
motivation to achievement level
城市节水水平
the level of city water-saving
城市节水水平综合评价
Comprehensive Assessment of Urban Water Saving Level