这种机器有两种可调的速度: 快速和慢速.This machine has two settings: fast and slow.支承中心应做成可调的.The center of support should be made adjustable.该行程可借助可调的止动螺钉加以限位.The stroke may be limited by adjustable stops....
充填料以银汞合金为好.The best filling material is silver amalgam.通过试验, 优化了碎石胶结充填料配比.Through the experiments, the mixture ratio of cemented crushed stone backfilling materials was optimized.充填料挤压输送泵是一种用于矿山充填的专用设备.The squeezed trans...
崖沙燕是一种褐羽白腹的鸟。The sand martin is a brown bird with white underneath.为了赎罪，他跣足褐衣，被流放到了荒野中。He was sent barefoot wearing only a hair shirt into the wilderness as a penance.褐赭色的山冈延绵数百英里不断.The low , brownish - ocher mountains c...