Sandstones are, as a rule , interbedded with shales.砂岩通常都与页岩互层.This paper presents the PDC bits with the satisfactory testing result in the multi - interbedded formation.介绍了一种复合式PDC钻头,该钻头在多夹层地层钻井施工中取得了较好的试验效果.A shale for...
My primary frustration with this book is the many typographical errors.我最感失望的是，本书有许多的印刷错误。From time to time stock errors or typographical mistakes may occur.不时股票错误或排印错误可能发生.Copyright for the typographical arrangement of ...
Food allergies can result in an enormous variety of different symptoms...食物过敏会引发很多不同的症状。My eyes popped at the sight of the rich variety of food on show.看到展示的花样繁多的食品，我的眼睛都瞪圆了。The library routinely handles a wide variety o...
他们在玩掷骰子游戏.They were playing dice.“ 如果可以说说心里话,我并不想掷骰子.'I don't think I do like, if I may speak my mind.是因为掷骰子做假么?Kicked on that occasion for cheating at dice?...
他真是个闷蛋。He's such an anorak.虽然很多朋友都说这本科幻小说很好看, 我宁可认为此书闷蛋透顶.Though many of my friends find this sci - fi interesting, I'd rather say it is downright tedious....