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Its main problem in projects is cavitation damage of ogee section, which can be frequently found in the end, downstream baseboard and downstream sidewall s of ogee section.

龙抬头式泄洪洞在中、高水头的水利水电工程中应用十分普遍，其突出的水力学问题是反弧段的空蚀破坏，反弧段空蚀破坏的部位常见于反弧末端、反弧段下游底板和反弧段下游侧墙。

Another attempt was undertaken by the Auto-Tank-Diesel Section of the Economic Department of the OGPU. This was a special section that employed tank designers convicted during the Purges.

另一个尝试是由OGPU经济部中的自动坦克柴油机科承担着手研制的，特别部门中的坦克设计师在大清洗中被订罪。

In the meantime, mutual to shock wave of wing section surface and attrib border layer interference and turn turn problem undertakes analytic computation, the result makes clear, the numeric method with proper union of mode of Gao-Yong compressible onflow can succeed ground imitate wing section steps sonic and agglutinant flow.

同时，对翼型表面激波和边界层相互干扰以及转捩新问题进行分析计算，结果表明，Gao-Yong可压缩湍流模式结合适当的数值方法能够成功地模拟翼型跨音速粘性流动。

The analgesia after operations of cesarean section to use PCEA, the nurses should observe closely osculation,it is a safe and effective method for postoperative of cesarean section.

剖宫产手术术后使用硬膜外自控镇痛，护理人员应密切观察，有针对性地进行护理，镇痛效果确切、安全，有效提高了术后的生存质量，有利于促进母乳喂养和术后的恢复。

Not be to state science is metric can use a Chinese character with the one digit that has statistical meaning number, for example: The pagoda tree is disconcerted beach? two kinds of commodity. 4 above (contain 4) number, use 3 phrasing, the span of 1/4 case leaves for nothing between section and section.

不是表示科学计量和有统计意义数字的一位数可以用汉字，例如：一本教材，两种商品等。4位以上(含4位)的数字，采用三位分节法，节和节之间空开1/4格的间距。

Therefore,lacustrine deposit can only exist in the low section of the early Paleocene,and its upper section has been in brackish water and salt water environment' Coarse s...

因此湖相沉积可能仅存在于下古新统下部，下古新统上部可能已进入半咸水及至咸水的环境。

In order to solve some problems existed in the fractionation section of paraxylene unit, state space models for xylene column and its reboiler furnaces in the section were set up by analyzing the mechanism and the influence factors.

针对对二甲苯装置二甲苯精馏单元在操作和控制中存在的问题，从机理出发，建立该单元二甲苯精馏塔及其重沸炉的状态空间模型，基于多变量预测控制技术开发了该单元先进控制系统。

The Nashui section of Luodian,Guizhou is a good section for the study of the Pennsylvanian conodonts and the stage boundaries.

贵州罗甸纳水剖面是研究宾夕法尼亚亚系牙形刺和各阶界线的良好剖面。

This control's wiper is connected to the plate of a 6GH8 pentode/triode tube's pentode section (more about its triode section later).

这种控制的雨刷连接到板的6GH8 pentode /三极管管pentode节。

Although i was nearly beaten by it, i will perservere in my practice of speaking section...i have no idea what a low score i will get in this section..sigh...

虽然我几乎被它打，我会perservere在我的发言节实践。。。我不知道什么是低分数，我会在本节得到叹息。。。哗啦啦地雷

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。