词汇	pullback blade
释义	pullback blade 反向铲,反铲
随便看	controlled diode controlled direct current generator controlled direct-current generator controlled direct current motor controlled directed fishing controlled-directed fishing controlled directional drilling controlled directional solidification Controlled directional wells controlled directivity controlled disbursement controlled disbursement inquiry controlled discharge controlled discharge from field surface controlled discharge lightning rod controlled discharge volume controlled discussion controlled disintegration controlled display controlled disposal of radioactive effluents controlled district Controlled document controlled doping controlled drain controlled drainage