Tufa, the unusual rock formations that jut out of Mono Lake in California's Eastern Sierra, are famous for their otherworldly beauty.
凝灰岩，是突出在加利福尼亚州的东部雪乐山的莫诺湖面的不同寻常的岩层，以其超凡脱俗的美丽而闻名于世。
The formation of the bottom hole rock-disintegrating track of the mono-cone bit with wedge teeth was studied, and simulation software for the track pattern was developed.
在此基础上以楔形齿为对象研究了偏心单牙轮钻头井底破岩轨迹的形成，并编制了井底轨迹图仿真软件以模拟牙齿的凿岩轨迹。
应用推荐