大家都搜：
牙轮钻头；旋转钻头
1、roller shutter───卷闸，卷帘百页；卷帘百页，卷帘百页
2、bit───adj.很小的；微不足道的；n.[计]比特（二进位制信息单位）；少量；马嚼子；辅币；老一套；一点，一块；adv.有点儿；相当；vt.咬（bite的过去式和过去分词）；vt.控制
3、dice roller───掷骰子
4、roller hockey───滚轴冰球；轮式曲棍球；旱冰曲棍球
5、drum roller───圆筒ZhenYa器；滚筒式压路机，滚筒式路碾，圆筒（光面）ZhenYa器
6、blunt roller───钝辊
7、roller───n.[机]滚筒；[机]滚轴；辊子；滚转机；n.(Roller)人名；(英、德、俄、匈、罗、捷、瑞典)罗勒；(法)罗莱
8、road roller───n.压路机; 路碾
9、derma roller───真皮压路机
1、In this paper, on the basis of the results obtained from the bench and field tests of the three roller bit, its improving direction is approached.───本文以三牙轮钻头的台架试验和油气田现场试验的效果为依据，探讨三牙轮钻头的改进方向。
2、The primary investigation of the sealing system of the high speed roller bit bearing.───高速牙轮钻头轴承密封XiTong的初步研究。
3、failure analysis of the high speed roller bit bearing.───高速牙轮钻头轴承的失效分析。
4、This paper introduces the application of the object-oriented technology in three roller bit simulation.───本文介绍了面向对象技术在三牙轮钻头FangZhen中的应用。
5、The investigation directions of the high speed roller bit sealing are put forward in the future.───针对这些情况提出高速牙轮钻头轴承密封在今后的研究方向。
6、Applytocore bit, electric coal bit, coal cutting bit, and roller bit.───适用于取心钻头，电煤钻，截煤机齿，牙轮钻头。
7、A modern design method, by which computer aided optimum design is used through the whole process of roller bit design, is introduced in this article.───介绍一种牙轮钻头的现代设计方法。设计过程全部使用计算机辅助设计和优化设计。
8、The investigation points out that one of the most critical factors of the roller bit service life are the service life of bearing system.───经研究发现，影响牙轮钻头使用寿命的最关键因素之一就是轴承XiTong的寿命。
9、and set up the drillability models on roller bit and PDC bit.───并建立了牙轮钻头可钻性及PDC钻头可钻性模型。