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Rolling drop-down box- but the drop-down tree structure, for its own use, can add methods and attributes.

详细说明：滚动下拉框－不过下拉的是树型结构，自己使用的，可以添加方法和属性。

The influencing factors of coal arch camber in planomural coal bin and coal drop pipe with rectangular or circular cross section during coal drop are studied theoretically.

对落煤过程中平壁煤仓及截面形状分别为矩形、圆形的落煤管起拱的影响因素进行理论研究。

Walk to the high side of the pillar and jump up to grab the grating. Traverse to the middle of the last square of grating. Then drop onto the other angled pillar. Slide back, grab the edge, and let go to drop through the break-away tiles in the cathedral dome, to land on a catwalk below.

此时脚下的高台是稍斜的，走到较高的一端，面对眼前另一斜柱，原地跳抓住头顶的铁丝网，并向前悬荡一格，松手会滑落到一处碎地板上，之后就会随碎地板落到地下的诸圣堂中的一处高架通道上。

When battery was rate-discharged, the cathode potential large drop caused by the aggravation of LiCoO〓 cathode polarization was main reason of battery's discharge capacity reduction and discharge voltage drop.

同时我们也比较系统地研究了MCMB/LiCoO〓电池的容量衰减机理、倍率放电时的限制电极及过充电过放电对电池性能、正负电极性能的影响。

The major works are as follows: 1 The 3-D numerical model of U-sharp flow passages is set up. The single-phase fluid flow and heat transfer are simulated for the U-sharp smooth and rib-roughened flow passages with FLUENT software. Their performance curves, temperature field and velocity vector are obtained and the local heat transfer and flow pressure-drop distribution along flow passage are analyzed. It is revealed that the ribbed flow passages can enhance heat-transfer and make the temperature more uniform, but it increases the pressure-drop to more extent. 2 The influences of diaphragm depth, channel width and board spacing on the performance are investigated.

建立了层叠式蒸发器U形流道的3维湍流模型，用FLUENT软件对尺寸相同的U形光滑流道和肋化流道中单相流体的传热和流动进行了数值模拟，得到了两种流道的传热和阻力性能关系曲线及速度矢量图、温度场，分析了光滑流道和肋化流道的局部换热系数及沿程压降变化，结果表明流道的肋化能有效的增强传热，而且使流体的流动和传热更加均匀，但也较大地增大了阻力。

Through giving the analysis of the reasons of drop bucket in mine coal, the OOB theoretical model of drop bucket is proposed.

本文对煤矿主井坠箕斗事故原因进行了分析，建立了煤矿坠斗事故&OOB&理论模型。

The results of cold-flow model test indicate:(1) the pressure drop rises with increasing air quantity and solids quantity respectively, however, much more air quantity and solids quantity minish in the same height position;(2) the pressure drop rises with increasing solids quantity;(3) the average granule concentration minishes with increasing air quantity, and rises with increasing the granule quantity in the same level position;(4) the inhomogeneity of distribution granule concentration minishes with increasing air quantity, and rises with increasing the granule quantity in the same level position.

结果表明：(1)在同一高度截面上，循环流化床反应器炉膛内压降随风量的增加而增加，但是风量过于增大反而使压降在同一截面上减小；(2)压降随初始物料量的增加而增加；(3)在同一水平截面上，颗粒浓度随风量的增大而逐渐减小，随物料量的增大而增大；(4)颗粒浓度分布的不均匀性随风量的增大逐渐减小，随物料量的增加不断增大。

Each pendent earring is designed as a scroll-shaped surmount supporting a detachable spindle-shaped drop, set throughout with cushion-shaped rubies, baguette and brilliant cut diamonds; the drop is detachable and the ear clip fitting may be adapted to a dress clip.

上半部分为卷曲设计，下半部分则悬挂可拆卸的纺锤形吊坠，通体镶嵌枕形红宝石，长方形及明亮切割钻石，吊坠可拆卸，耳夹可作为衣夹佩带

The interested person that do poineering work is fast dial morning paper hot line 966966, relate oneself poineering drop or story, those who participate in poineering service center of our newspaper and medium and small businesses of southwest of bureau of city medium and small businesses to be held jointly " poineering gold drop " selection activity, capture 2000 yuan of large award.

做了10年传统室内装修生意的张德芳称他的创业激情从来没被磨灭，最大的爱好之一就是去书店阅读相关书籍寻找创业灵感，他通常要花大半天时间呆在书店。去年，解放碑某书城里一本介绍网站发展潮流的书籍吸引了张德芳的眼球，他从中翻到一个叫&威客&(Witkey，网上服务者，利用自己的聪明、经验、技能通过网络为其他网友提供服务，并获取收益)的生疏名词。

In addition, the imitation method of spin-up and spring back drag loads for column style drop test-bed is discussed, and determined the reasonable imitation style, perfected drop test technology.

另外，本文对国内立柱式落震试验台的起转和回弹载荷模拟方法进行了研究，确定了合理的模拟方式，完善了落震试验技术；通过模拟起落架落震试验的钢球冲击钢板的冲击实验，对机轮垂直载荷的精确测量问题进行了初步的研究；研制了一套监测起落架投放高度的测量系统；用Turbo C和VC++6.0编写了落震试验数据采集和处理系统的应用软件。

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。