角岩

In order to raise drilling speed of the non saline dome wells in Kenkiyak Oilfield, the relationship between rake angles of the cutter, profile of the bit, which have effect on cutting depth and impact-resistant of PDC bit cutters, and cutting efficiency is studied respectively using finite element analysis according to rock properties of the research area. The structure of the PDC bit is then optimized by using the research result.

为提高肯吉亚克油田非盐丘井钻井速度，根据地层岩石力学参数评价结果，利用有限元方法对影响PDC钻头攻击性和抗冲击性的齿前角、冠部形状等结构参数与破岩效果之间的关系进行了研究，并对PDC钻头的结构进行了优化设计。

As country peasants set their hounds on to a homed stag or wild goat- he has taken shelter under rock or thicket, and they cannot find him, but, lo, a bearded lion whom their shouts have roused stands in their path, and they are in no further humour for the chase- even so the Achaeans were still charging on in a body, using their swords and spears pointed at both ends, but when they saw Hector going about among his men they were afraid, and their hearts fell down into their feet.

山里的猎人，带着猎狗，追捕一头带角的公鹿或野山羊，但因猎物被陡峻的岩壁或投影森森的树林遮掩，使他们由此意识到自己没有捕获的运气――不仅如此，他们的喊叫还引出一头硕大的、虬须满面的狮子，突起追赶，把他们吓得四散奔逃。就像这样，达奈人队形密集，穷追不舍，奋力砍杀，用剑和双刃的枪矛；然而，当他们看到赫克托耳重返战场，穿行在队伍里时，全都吓得惊慌失措，酥软的腿脚涣解了战斗的勇力。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。