A dual rack paper-pushing device on paper cutting machine.
切纸机的双齿条推纸机构。
The truck for removing sand on desert roads consists of sand pushing device, air blower, elevator and truck chassis.
沙漠公路清沙车由推沙装置、风力清沙装置、升降架和卡车底盘等组成。
The paper introduces role and design method of improved test pushing device , and discusses its technical and economic benefits .
介绍了改进型试推装置的作用,设计方法,并就其技术经济效益进行了论述。
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