权威例句
Crushing device of ballast of harden road bedBallast cleaning and levelling machineMainline Rock & Ballast Brief, for respondent Secretary of LaborMobile crusherConcentrated bi-density eccentric counterweight for cone-type rock crusherCalibration Of Railway Ballast DEM ModelDevelopment of flowsheet for production of ballast from refractory wastesBARDON HILL UPRATE PRIMARY CRUSHERDiscrete element method (DEM) modelling of rock flow and breakage within a cone crusherDiscrete element method (DEM) modelling of rock flow and breakage within a cone crusher
