最普通的精加工工序是用机械的方法, 如研磨, 磨削或用磨料抛光.The most common finishing operations are mechanical, such as milling, grinding, or polishing with abrasives.实验中采用磨料磨损的方式.Abrasion wearis taken as the main wear mode in the experiments.磨料水射...
我原以为我们结婚后他会改变的。I thought he would change after we got married.生活变得美好，不是偶然，而是我们努力改变的结果。Life gets better not by chance, but by change.做出改变的秘诀不是多么努力地和过去做斗争，而是全力以赴地去打造全新的自己。The secret of change is to focus all of your energy...
Fraunhofer technicians can reduce air pressure inside, making ears pop , to mimic cruising at 35,000 feet.弗劳恩霍夫的技师们可以将机舱内的气压降低到让耳朵发胀的程度, 以模拟在35,000英尺飞行的状态.The Fraunhofer device depends on a temperature gradient: the grea...
他们的生活水平勉强在最低水平线以上.They were living barely above the level of subsistence.海港的灯火在水平线上闪烁着.Harbour lights were blinking on the horizon.我们也可以将矩阵分块,即在行以及列之间画一些水平线和垂直线.We may partition matrices by drawing horizontal and vertica...