rotary feed meaning in English

回转进料器
圆周进给

While hall system employed a rotary feed unit , operated by the bolt , to put new cartridge in line with the barrel , fn designers incorporated a stationary helical ramp into each magazine , w hich rotates cartridge for 90 degrees prior to placing it into feed lips
同时系统采用旋转大厅饲料单位,由螺栓、把新枪弹与枪管、设计师新生力量纳入到每一个固定螺旋匝道杂志-脑出血90度旋转装之前将它变成饲料嘴唇