The parameter 2~(1/2) U may be taken also as a tensile strength of rock which contains small randomly distributed preexisting cracks.
同时，参量2~（1/2）U可以取做为含有随机分布较小裂隙的岩石抗拉强度。
U. S. Federal Railway Administration Research and Development Office developed a track surface and underground rock movement investigation system.
美国联邦铁路局研究开发办公室通过一项研究项目。开发出一种轨道表面及地下岩土移动勘测系统。
Critics have 14 likened U. S. Senator Hillary Clinton's launch of her new book to a rock star on tour.
批评家把美国参议员希拉里·克林顿的新书发行比作摇滚歌星的巡回演唱。
For rock roadway layout layer, the necessity and feasibility of using nude alley, a hell of arch, the U-steel shed, bolt net and spraying and other forms of support are expounded.
针对岩巷布置层位，阐述了采用裸巷、砌碹、u型钢棚、锚网喷等多种支护形式并存的必要性与可行性。
Through the structural mechanics analysis of U-shaped steel support widely used in soft-rock supporting, the author has found out the failure causes from the support structure itself.
目前软岩支护问题突出，在一些软岩巷道中，用于支护的u型钢支架破坏比较严重，本文对支架进行了结构力学分析，并从支架自身结构方面对破坏原因进行了分析。
Many investors think otherwise, flocking to the safety of U. s. Treasurys in spite of rock-bottom yields.
许多投资者的想法刚好相反，向着美国财政部债券的安全性蜂拥而去，尽管债券收益已触底。
In American Jazz Rock and Role Western and country music are the main type of popular music. Jazz is considered the U. s' s unique contribution to music.
爵士乐，摇滚乐和西部乡村音乐是美国流行音乐的几种形式，爵士乐被认为是美国人对音乐的非凡贡献。
It's possible, of course, that the U. S. economy will relapse into a protracted recession and that interest rates will remain at rock bottom.
当然，可能美国经济将重新陷入长时间的衰退，而利率将仍然保持在最低点。
U screw conveyor is suitable for conveying various powder, granulated and small lump materials, such as flour, corn, sand pulverized coal, cement, and all kinds of small pieces of coal and rock, etc.
型螺旋输送机适用于输送各种粉状，粒状及小块状物料，如面粉，谷物，砂土煤粉，水泥，及各类小块的煤和石子等。
For tunnel sections with good surrounding rocks, the U-shaped rock-bolted section is selected as a final optimized section instead of the original circular reinforcement concrete lining section.
对隧洞围岩条件良好洞段，论证取消隧洞原圆形钢筋混凝土衬砌，选定马蹄形锚喷断面作为最终优化断面形式。
In American, Jazz, Rock and Role, Western and country music are the main type of popular music. Jazz is considered the U. s' s unique contribution to music.
爵士乐，摇滚乐和西部乡村音乐是美国流行音乐的几种形式，爵士乐被认为是美国人对音乐的特别贡献。
In American, Jazz, Rock and Role, Western and country music are the main type of popular music. Jazz is considered the U. s' s unique contribution to music.
爵士乐，摇滚乐和西部乡村音乐是美国流行音乐的几种形式，爵士乐被认为是美国人对音乐的特别贡献。
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