On the Annotation and Expressivity of “Xie”;
关于“斜”字的注解、表现性及其他——新编中学语文教材批判之一:《过故人庄》读后
This treatise introduces the method of calculating the length of the culverts constructed by the methods of making the frame piers at right angle and skew made for skew pipe culvert.
本文介绍了斜交正做和斜交斜做涵洞长度的确定方法,比较了二者的优缺点。
Combination of flexible deviation correction and prevention drilling tools can control the increase of deviation of the drilling well effectively while the rate of penetration(ROP) is increased,and can decrease the deviation also.
柔性纠斜防斜钻具组合在提高机械钻速的情况下能有效地控制井斜增加,并具有降斜作用,为大倾角硬地层易斜区快速纠斜防斜钻进提供了一种新的钻具组合类型。