失效的

It means that the city's spatial expansion has not been supported effectively by the transportation system. The polycentric industrial areas and the annularly distributed population do not match spatially.

具体而言，广州市多中心的产业增长和圈层式的人口分布在空间上不匹配，城市未来钟摆式通勤交通的压力将不断加大，而单中心放射状的"双快"交通系统在解决这一问题上是失效的；另外，"双快"系统不利于外围新城市副中心的建设，相反由于与中心城区的快速联系，有可能将大量的人口留在中心城区边缘，给中心城区带来巨大的服务压力。

Due to its good effect in the reservation of information of signal abrupt change, mathematical morphology is often applied in the detection and location of short-term power quality disturbance, however, there is still a defect of invalid detection existing in partial detection methods based on mathematical morphology while some zero-crossing disturbances are detected. In this paper three mathematical morphology based disturbance detection and location methods, i.e., the method based on first-order derivation and morphological gradient, the method based on morphological gradient and soft threshold processing and the method based on dq decomposition and top-hat transform, are analyzed, that is, by means of simulation the adaptability of these methods in the analysis on the signals of voltage sag, voltage swell and electromagnetic transient oscillation is compared.

数学形态学因其在保留信号突变点信息方面有很好的效果，因此常用于短时电能质量扰动的检测和定位，但基于数学形态学的部分方法仍存在对某些过零点扰动检测失效的缺点，文章分析了3种基于数学形态学的扰动检测和定位方法，即基于1阶求导和形态梯度的方法、基于形态梯度和软阈值处理的方法、基于dq分解和高帽变换的方法，通过仿真比较了3种方法在分析电压暂降、电压暂升、电磁暂态振荡等信号方面的适应性，结果发现基于dq分解和高帽变换的方法在检测过零点扰动时具有很好的效果，因此选取这种方法对实测扰动数据进行了检测和定位分析。

The layout having accomplished the complete machine external formputting the dyadic spirit face hammer crusher together designs themain body of a book, application and operating principle havingintroduced the type crusher of all kinds's, at present domesticcrusher current situation and developing trend and, adopt theone-level cone tooth to reduce the speed combining with the brokenability and request; Condition having set forth a gear wheelbecoming invalid; Hydraulic coincidence the implement operatingprinciple; The coal moisture content breaks effect in process tobeing broken; Impact of the coal size over broken effect; Break themachinery be maintained to pieces.

本文完成了综采工作面锤式破碎机的整机外形的布局设计，介绍了各类型破碎机的应用和工作原理，以及目前国内破碎机的现状和发展趋势，结合破碎能力及要求采用一级锥齿减速；阐述了齿轮失效的条件；液力偶合器的工作原理；煤的水分对碎破过程中的影响；煤的粒度对破碎效果的影响；破碎机械的维修。

The layout having accomplished the complete machine external form putting the dyadic spirit face hammer crusher together designs the main body of a book, application and operating principle having introduced the type crusher of all kinds's, at present domestic crusher current situation and developing trend and, adopt the one-level cone tooth to reduce the speed combining with the broken ability and request; Condition having set forth a gear wheel becoming invalid; Hydraulic coincidence the implement operating principle; The coal moisture content breaks effect in process to being broken; Impact of the coal size over broken effect; Break the machinery be maintained to pieces.

本文完成了综采工作面锤式破碎机的整机外形的布局设计，介绍了各类型破碎机的应用和工作原理，以及目前国内破碎机的现状和发展趋势，结合破碎能力及要求采用一级锥齿减速；阐述了齿轮失效的条件；液力偶合器的工作原理；煤的水分对碎破过程中的影响；煤的粒度对破碎效果的影响；破碎机械的维修。

This model is different from the structural dynamics model in a non-inertial reference frame with large overall motions known.

本文从力学基本原理出发，分析了刚柔耦合零次近似理论失效的原因，深入研究了有大范围运动的柔性体变形场的描述，建立了刚柔耦合一次近似的动力学模型；然后利用上述模型，从非惯性系下的结构动力学问题和大范围运动为自由的刚柔耦合动力学问题这两个层次上进行了刚柔耦合动力学建模理论与性态的研究，采用理论和实验相结合的手段来检验了一次近似刚柔耦合动力学模型的正确性。

This study, revolved around the leading elements in Yangpu administerial mode, is summarized in f...

本文主要围绕洋浦行政模式的超前性进行研究，共分为四个部分：第一部分介绍洋浦行政模式的创立背景，从海南行政大环境和洋浦经济体制的特殊性两个方面阐述建立洋浦行政模式的必然性；第二部分从行政理念、行政机构设置和职能划分、公务员队伍建设和内部约束机制四个方面分析洋浦行政模式&小而精&的特色；第三部分指出洋浦行政模式失效的原因并分析该模式的超前性表现；第四部分从四个方面总结洋浦行政模式在当今WTO机制运行下的重要意义。

This study, revolved around the leading elements in Yangpu administerial mode...

本文主要围绕洋浦行政模式的超前性进行研究，共分为四个部分：第一部分介绍洋浦行政模式的创立背景，从海南行政大环境和洋浦经济体制的特殊性两个方面阐述建立洋浦行政模式的必然性；第二部分从行政理念、行政机构设置和职能划分、公务员队伍建设和内部约束机制四个方面分析洋浦行政模式&小而精&的特色；第三部分指出洋浦行政模式失效的原因并分析该模式的超前性表现；第四部分从四个方面总结洋浦行政模式在当今WTO机制运行下的重要意义。

Be living in the deep well ultradeep well prospecting process ,Since radial direction force 、Eddy is stird 、Elements such as horizontal vibration and so on being ,In the wake of well drilling time the increase ,The auger post writings is used the casing inside wall crossrange strenuously to broaden ,It is more and more grave to cause casing and drilling rig to join the wornout problem .

论文摘要：在深井超深井勘探过程中，由于径向力、涡动、横向振动等因素的存在，随着钻井时间的增长，钻柱作用于套管内壁的侧向力增大，导致套管和钻具接头磨损的问题越来越严重。造成钻具耐磨带失效的主要原因有地层研磨性、钻杆的井下工况、耐磨材料选择与

Aiming at the frequent occurrence of drill-string fracture during gas drilling in the Puguang gas field, this paper, based on the statistical analysis of accidents on fields, makes in-depth investigation into the origins of drill-string accidents in aspects of peculiar drilling medium, different rock-breaking methods, and the vibration of drill string during the drilling process. Through macro, micro and material analysis of the fracture surface of drill string, the law of drill-string failure due to fracture is discovered and the fatigue fracture is found out to be the main type of drill-string fracture.

针对普光气田气体钻井过程中存在的钻具断裂频繁的问题，在对现场事故统计分析的基础上，从特殊的钻井介质、不同的破岩方式以及钻井过程中钻柱共振等方面定性分析了钻具断裂的原因；通过对钻具断口宏观、微观及材质分析，找到了钻具断裂失效的规律和主要形式－疲劳断裂。

The final collapse of this great rebellion, with all its latent potentialities, was an inevitable result of its early failures.

这巨大叛乱的最后的崩溃，与所有它的潜在潜在性，是它的提早失效的一个不可避免的结果。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐