In this article , based on the comparison between several traditional calculation methods , the equivalence square law , which is of excellence in terms of utilization , calculation and programming , is finally selected by the author as the method for calculating reactive power compensation 本文通过对几种传统无功优化补偿方式的比较，最终选择了等面积法作为本论文的无功补偿优化的计算方法。这种方法具有通用性好、计算方便、便于编程等优点。
Under the horizontal earthquake action and wind force , aim at " the pure frame structure with rectangle columns " , " the pure frame structure with special - shaped columns " , " the frame - truss structure with special - shaped columns " and " frame - shear wall structure with special - shaped columns " , earthquake action analysis was done by the spacial finite element method through the changes structural parameter . analyzing systematically " structure vibration mode " , " vibration period " , " structure lateral rigidity " , " seismic action force " , " seismic response force " , " floor seismic shear force " , " lateral horizontal displacement of structure " and " members internal force " . results indicate : ( 1 ) based on equal area , the special - shaped columns replaced the rectangle columns , the structural lateral rigidity enlarges , the lateral displacement minishes obviously , the earthquake response increase slightly , the biggest increasing amount of frame columns axis - compress ratio is smaller than 0 . 08 . the whole aseismic performance of structure has improved ; ( 2 ) when the section ' s length and section ' s thickness ratio of special - shaped columns is smaller than 3 . 6 , the structure benefits to resist seismic action ; ( 3 ) the angle of horizontal seismic action with the whole coordinate is 0 degree , structure earthquake response is bigger , belonging to a control factor of structure aseismic design ; ( 4 ) the frame - truss structure with special - shaped columns and the " a " - brace has the biggest lateral rigidity ; ( 5 ) the frame - shear wall structure with special - shaped columns have bigger lateral rigidity and smaller displacement , members internal force enlarged just rightly , have much superiority of resisting seismic action ; ( 6 ) in the higher seismic fortification criterion region ( 8 degree of seismic fortification intensity ) , aseismic disadvantageous building site ( iii type site ) , adopting special - shaped columns structure system , should reduce possibly the building ' s self - weight in order to reduce the earthquake response ; ( 7 ) the response spectrum method of computing seismic response and the time - history analysis method have similar analysis result 西安理工大学硕士学位论文在水平地震作用下，并考虑风荷载组合，分别对“矩形柱纯框架结构” 、 “异型柱纯框架结构” 、 “异型柱框一析架结构”及“异型柱框-剪结构”等四种结构体系，通过改变结构参数，运用空间有限元方法，进行地震作用计算。系统地分析研究“结构振型” 、 “振动周期” 、 “结构侧向刚度” 、 “结构地震反应力” 、 “楼层地震剪力” 、 “结构侧向位移” 、 “层间位移角” ，以及“构件内力” 。结果表明:在等面积原则下，异型柱代换矩形柱后，结构刚度增大，侧向位移明显减小，地震反应力略有增加，框架柱轴压比最大增幅小于8 % ，结构整体抗震性能有所提高;当异型柱肢长肢厚比小于等于3 . 6时，结构有利于抗震;水平地震作用力与整体坐标夹角为0度时，结构地震作用效应较大，属结构设计的控制因素之一;异型柱框一析架结构采用“人”字斜撑，侧向刚度大于“八”字斜撑和“人一八”字混合斜撑;异型柱框一剪结构侧向刚度大、位移小，构件内力增大适中，是一种抗震性能优越的结构体系:在抗震设防烈度较高地区( 8度)和抗震不利的建筑场地( m类场地) ，采用异型柱结构体系时，应尽可能减轻结构自重，降低地震作用力;分别采用“振型分解反应谱”法和“时程分析”法进行地震作用计算，两种方法所得结果基本一致。
Refers to farmland which is plowed constantly for growing crops , including cultivated land , newly cultivated land in the current year , farmland left without cultivation for less than three years and fallow land in the current year , rotation land , rotation land of grass and crops , farmland with some fruit trees , mulberry trees and other trees and cultivated seashore land , lake land , and etc 指年初可以用来种植农作物、经常进行耕锄的田地，除包括熟地、当年新开荒地、连续撂荒未满三年的耕地和当年的休闲地（轮歇地） ，还包括以种植农作物为主并附带种植桑树、茶树、果树和其他林木的土地，以及沿海、沿湖地区已围垦利用的“海涂” 、 “湖田”等面积。
In order to obtain the most economic benefits , the paper utilized the theory of " homalographic characteristic " and " share alike compensation current characteristic " to build up the best compensation relation for " hour - current " curve applied to transformer substation and for " length - current " curve applied to distribution line 以获得最大经济效益为目标，利用“等面积特性”和“补偿电流等分特性”理论。推导了应用于变电站的“时间?电流”曲线关系中存在的最佳补偿关系，以及应用于配电线路的“长度?电流”曲线关系中存在的最佳补偿关系，及补偿后的经济效益计算模型。
Cultivated area ( area under cultivation ) ： refers to farmland which is plowed constantly for growing crops , including cultivated land , newly cultivated land in the current year , farmland left without cultivation for less th an three years and fallow land in the current year , rotation land , rotation land of grass and crops , farmland with some fruit trees , mulberry trees and other trees and cultivated seashore land , lake land , and etc 耕地面积：指年初可以用来种植农作物、经常进行耕锄的田地，除包括熟地、当年新开荒地、连续撂荒未满三年的耕地和当年的休闲地（轮歇地）外，还包括以种植农作物为主并附带种植桑树、茶树、果树和其他林木的土地，以及沿海、沿湖地区已围垦利用的“海涂” 、 “湖田”等面积。
The dissertation gives a profound and extensive theoretic research of starting process , causes of fall - out and damages caused by fall - out as well as the electromagnetic process in large pumping station . the ? qual area criterion ? is used in this research to analyze the stability limitation of the synchromotors fall - out in detail . in the end , the study also puts forward a couple of practical methods to prevent synchromotors from fall - out and corresponding solutions to the fall - out 本文主要内容是：围绕大泵站同步电机起动过程、运行中的失步机理及危害、失步时电磁物理过程等方面进行了细致深入的理论研究；用“等面积定则”分析大泵站同步电机失步的稳定界限并提出求解方法；提出预防同步电机失步的措施。
On the assumption of ignoring the distortion of thickness , this paper determines the rough shape by the geometric modeling method of equal area developing using mixed mesh cell of triangle and quadrangle for the first time , presents the equal area developing arithmetic of quadrangle - triangle . on the virtual geometric symmetry axis , we puts forward the method of determining the developed coordinate of the point on the base band in the development of using regular quadrangle cell , determines the developed shape of internal structure in plane utilizing point - to - point mapping theory . furthermore , we realize the approximate developing of undeveloped - irregular boundary surface using a few triangle cells 本文结合型号研制中小曲率机翼整体壁板类零件坯料展开课题，基于板料厚向变形忽略不计的先验假设，首创混合四边形-三角形网格等面积展开的几何模拟法确定壁板类零件毛坯外形，给出了混合四边形-三角形网格等面积展开算法；提出了虚拟分割线的概念，采用虚拟几何对称轴，给出了规整四边形单元展开基带上结点的计算方法；采用映射原理和求交算法确定了壁板内部结构信息的展开定位。
On the basis of analysis previous experiment data , it is conclusion that allowable value of drift angle of elastic and elastic - plastic is 1 / 550 and 1 / 75 respectively , which is applicable to r . c . frame structure with special - shaped column is given out . the conclusion explains that the deformabiliry of r . c . frame structure with special - shaped column lies between rectangle column frame structure and shear wall structure . the calculating formula of allowable value of axial load ratio of special - shaped column is derived , it is compared with that of equaling areas rectangle column 根据对前人试验数据的统计分析，给出了适用于异形柱框架结构的弹性和弹塑性层间位移角限值分别为1 550和1 75 ；指出了异形柱框架结构的层间变形能力介于普通矩形柱框架结构和剪力墙结构之间；以t形柱为例，推导了异形柱轴压比限值的计算公式，通过与等面积矩形柱的对比分析，认为异形柱的轴压比限值与其截面尺寸的比例关系有关；当腹板受压或翼缘受压时， t形柱轴压比限值存在较大差异；不同的荷载角作用，轴压比限值变化较大；矩形柱的轴压比限值要大于异形柱的轴压比限值。
According to the observed experiments that the na2feo4 solution with the same concentration and volume were decomposed by the same area of different membrane , we learned the order of the decomposing rate of na2feo4 caused by different membranes : soapnated cellulose acetate > vinylon > polypropylene polyvinyl chloride = polyethylene microfiber glass mat 从观察等面积的隔膜引起同浓度同体积的na _ 2feo _ 4溶液的分解实验可知，不同隔膜材料引起na _ 2feo _ 4溶液分解速率从大到小的顺序是，皂化再生纤维素膜维尼纶无纺布改性聚丙烯膜聚氯乙烯膜辐射接枝聚乙烯膜复合玻璃纤维毡。
This may be uneconomical or even infeasible in some circumstances . in contrast , ec actions usually cost dearly , and need restoring time if the objective disturbances actually occur . obviously , it is great significant for assuring large scale power systems in security and economy operation states to optimize pc ec and their coordination 另一方面，扩展等面积准则( exendedequal - areacriterion - eeac )的完善、在线控制方案及其相关技术的成熟、优化领域的进展克服了研究统一的大电网暂态稳定控制安全性和经济性协调的客观、主观瓶颈，提供了课题研究的可行性依据。
