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(?)科文科苏联地质保矿部中央设计局根据(?)科文科同志的建议设计了用于KAM－500型钻机上的带升降机齿轮罩封闭帽的移动手把。这种手把与工厂所做的不同,它的齿轮罩的封闭帽将带有回转齿轮的横轴完全封闭住,从而保证了工作人员工作安全。
(?) The Central Design Bureau of the Covington Soviet Geology and Mineral Care Department designed a mobile handle with a gear cap closure cap for the KAM-500 drilling rig based on the recommendations of Comrade Kevin. This kind of handle is different from what the factory does. The closure cap of its gear cover completely encloses the horizontal axis with the slewing gear, thus ensuring the safety of the working staff.