Study results from both theory and computer simulation were shown in the paper. According to the fact that different characteristics of sound field are displayed with different excited frequency on spherical shell, in the case of different ratio of spherical shell thickness to radius, the pressure directivity of the model can conform to that of the prototype rather well by adjusting the excited frequency of the model. Of course the modification of numerical scale factor is required, in order to make the identity of nondimensional pressure of two systems.
通过理论和计算机仿真研究，结果表明：利用球壳在不同激励频率时声场的不同特性，当球壳厚度半径比不同时，通过对模型激励频率的调节，可以使模型与原型的声场指向性较好的符合，但若使两系统的无量纲声压相符，还需要进行数值比例因子的修正。
This is because the calculation at the scale of the expansion of computing/communication ratio increases, the system and calculation of overhead expenses to a reasonable allocation, thereby enhancing the efficiency of the parallel.
这是因为对着计算规模扩大，计算/通信比率升高，系统开销与计算开销分配的进一步合理，从而提高了并行效率。
From the material choice, the superiority which has carries on the synthesis comparison to the steel structure system, and from the construction cost, aspects and so on synthesis economic efficiency has carried on the technology and the efficient analysis to the steel structure housing draws the conclusion: The steel structure housing use area ratio reinforced concrete housing increases about 6%, the time limit for a project reduced large scale, has met the great span construction need, specially the superior anti-knocking property, the recoverability, has manifested the steel structure comprehensive construction cost superiority; The steel structure or the steel - concrete composite structure housing direct economic efficiency mainly comes from the structure construction time limit for a project to reduce with the house useable area rate enhancement superiority, and increases along with the housing layer, the benefit increases obviously.
2从材料的选择，具有的优势对钢结构体系进行综合比较，并从造价、综合经济效益等方面对钢结构住宅进行了技术与经济性分析得出结论：钢结构住宅使用面积比钢筋混凝土住宅增加6％左右，工期大幅度缩减，满足了大跨度建筑需求，特别是优越的抗震性，可回收性，体现了钢结构住宅的综合造价优势；钢结构或钢-混凝土混合结构住宅的直接经济效益主要来自结构施工工期缩短和房屋使用面积率提高的优势，并且随着住宅层数增加，效益增加越明显。
Add composite silicon and scale resistor containing adipic Acid/ amine terminated polyether/ diethylenetriamine copolymer and poly into the industrial water treatment system, the weight ratio of the adipic Acid/ amine terminated polyether/ diethylenetriamine copolymer to poly being 10:1 to 2:1, so that the two polymers cooperatively prevent scaling in the industrial water treatment system steadily.
本发明属于工业水处理技术领域，具体涉及一种用于阻止工业水处理系统中二氧化硅垢沉积的复合阻硅阻垢剂，即在工业水处理系统中加入含有己二酸/端氨基聚醚/二乙烯三胺共聚物和聚天冬氨酸钠的复合阻硅阻垢剂，己二酸/端氨基聚醚/二乙烯三胺共聚物与聚天冬氨酸钠的重量比为10∶1～2∶1，以使这两种聚合物在工业水处理系统中发挥稳定的协同阻止硅垢沉积的效应。
It is not consistent with damping mechanism and full-scale data of damping ratio of buildings.
目前结构设计阶段通常取阻尼比为常数，这不能真实反映建筑物的阻尼机理，与阻尼比的实测结果也有很大的差距。
In this method, the auxiliary pulses with same pulse amplitude, width and delay, but different numbers were added on primary color address electrodes respectively at each subfield. So the ratio of luminance among primary colors was changed, and white color balance of each subfield and each gray scale satisfied the design requirement.
通过在各子场对三基色寻址电极分别加幅度、宽度和延时相同，但数目不同的辅助脉冲，从而改变三基色之间的亮度比率，使每个子场和各灰度级的白平衡满足要求，改善了全屏白平衡一致性，而不需要改变现有电路硬件设计，不增加额外电源。
By using this model, the characters of turbulent combustion in a combustion bomb and the effects of turbulence intensity and turbulence scale on combustion with equivalence ratio of 0.9 and 0.7 were discussed. It is found from the comparison between model and experiment that the numerical model is reasonable.
利用理论模型，分析研究了当量燃空比分别为0.9和0.7时，容弹内湍流燃烧的特点以及湍流强度、湍流尺度对燃烧过程的影响，并通过比较计算结果和实验结果，证实了理论模型的合理性。
And the effect of the image distortion center bias and scale factor ratio offs.
并对图像的畸变中心和纵横比例因子对校正的影响做了探讨。
Including the factors of industry dummy and lagged variable, this dissertation has used a partial adjustment model by 1995-2002 listing corporations data and found that industry dummy, lagged variable, Tobin'Q, debt ratio, long term debt ratio, scale of corporation and gross profit ratio to main operation revenue affect debt maturity.
当考虑滞后影响和行业特征时，利用局部调整模型对沪、深股市1995-2002年数据证实了上年末负债期限、资产负债率、长期负债比率、托宾Q值、公司规模、主营业务毛利率以及行业特征均显著影响负债期限结构选择。
According to the characteristics of the gray projection curves, a pair of maximum and minimum points are found near the central position of each gray projection curve. The differences in position are calculated respectively and the scale change parameter is obtained as the ratio of both differences.
此时，可根据尺度变化下图像灰度累积投影曲线的特点，分别计算参考帧和当前帧的投影曲线上一对极大—极小值点的坐标差值，以它们的比值作为缩放系数，实现实时求取。
Analysys International the relevant data shows that the scale of transit media advertising revenue in five total income scale outdoor media in 2005 when the ratio was only 4.3 percent, to 2007 on up to 15 percent and is expected to 2010 the proportion will Rose to 20 percent.
易观国际的有关数据显示，公交媒体广告收入规模在五种户外媒体总收入规模中的比例2005年时仅为4.3%，到了2007年就上升到了15%，预计到2010年所占比例将上升到20%。
The general trend is: building new scale petrochemical industrial slowdown, restructuring and technological upgrading ratio has increased. construction of supply exceeding demand, increased competition; construction companies to the technical content, the level of management, business scope, adaptability and overall strength of the growing demands increase.
总的趋势是：石化工业建设的新增规模趋缓，结构调整和技术更新的比例增大；工程建设队伍供大于求，竞争日趋激烈；对工程建设公司的技术含量、管理水平、经营范围、应变能力和综合实力的要求日趋提高。
Methods 26 patients with gastrocnemius spasticity after stroke were randomly divided into ultrasonic group and control group. The stretch therapy was used in the two groups, and the continuous ultrasonic wave therapy was added on ultrasonic group for 4 weeks. The scores of modefied Ashworth scale, the ratio of Hmax and Mmax, and the fascicle length of gastrocnemius pre and post treatment were observed and compared respectively in the two groups.
26例脑卒中后腓肠肌痉挛的患者随机分为超声波组和对照组，两组在给予腓肠肌牵张治疗的基础上，超声波组采用超声治疗仪对患侧腓肠肌进行连续超声波治疗4周；比较治疗前后两组改良的Ashworth量表评分、胫神经H反射的最大H波和M波比值、腓肠肌肌束长度。
DWT to abandon the details of the signal and the only part of its approach to signal reconstruction; When approaching the signal can not meet the requirements of precision, only those who consider the relative concentration of energy-scale space of the details of the signal, in some accuracy to meet the request of the greater compression ratio.
抛弃离散小波变换的细节信号而只用其逼近部分来重构信号；当逼近信号不能满足精度要求时，只考虑那些能量相对集中的尺度空间的细节信号，在满足一定精度要求下得到更大的压缩比。
With a simple but meaningful model, the substitution ratio among the network externality and economy of scale is calculated in influencing market price, quantity and firms'profit.
分析了网络外部性与规模经济性的替代关系与强度、规模效应导致的市场完全覆盖以及完全覆盖后的影响力变化等问题。
The experimental results showed that the molecular weight and its distribution is restrained by the reaction mass's ratio, reaction temperature, and the different addition of reaction promoter, molecular weight regulator and additive, the correspinding product's scale inhibitive perfomance of Water Stabiliser is different.
结果表明：单体配比、反应温度、引发剂、分子量调节剂和添加剂的不同用量对分子量及其分布都有制约作用，相应的水质稳定剂产品的阻垢性能也不同
Therefore, it is very necessary to increase concentration ratio of manufacturing especially industries with marked scale e...
因此 ，如何按照分类指导、区别对待的原则，实行分类调控和引导，以有效提高制造业特别是规模效益显著行业的集中度，将是当前产业组织政策亟待解决的一个重要课题。
An automatic video object plane extraction algorithm is proposed. At first, a binary moving mask is obtained by Gaussianity test based on temporal motion information, followed by a further test by establishing MRF model on double-scale neighborhood to achieve smooth and complete binary moving mask. Then, an improved watershed algorithm based on nonlinear transform is employed to segment moving regions. Finally, moving objects are extracted by performing ratio operation on spatial and temporal results.
提出一种视频对象平面自动提取算法，首先以时域帧间运动信息为依据，利用高斯检验方法得到初始的二值运动模板，并建立双尺度邻域的MRF模型进一步检验，以获取平滑、完整的运动模板；然后提出了结合非线性变换的改进分水岭算法对运动区域进行帧内空域分割；最后对时域和空域分割结果进行比重运算，提取最终运动对象。
Coal water slurry can be used as reburning fuel to reduce the NOx emission in large scale station boiler. In order to study the reburning effect and influence, experiments were done on a 670t/h CWS-fired boiler with reburning fuel fraction varying from 12.5% to 25%; reburning zone excess air ratio varying from 0.91 to 1.04; primary combustion zone excess air ratio varying from 0.92 to 1.34. The influence on NOx reduction such as reburning fuel fraction, reburning zone excess air ratio, primary combustion zone excess air ratio in reburning zone as well as reburning zone temperature, flue residence time and mixing condition were all investigated.
为了研究使用水煤浆作为再燃燃料在大型电站锅炉上的再燃脱硝效果和影响因素，在1台新建的670t/h的水煤浆锅炉上进行了再燃燃料量比在12.5%~25%、主燃区过量空气系数a1在0.92~1.34、再燃区过量空气系数a2在0.91~1.04之间变化的低NOx燃烧调整试验，分析了再燃燃料量比、再燃区过量空气系数、主燃区过量空气系数、再燃区温度、烟气在再燃区停留时间和混合状况对脱硝率的影响。
To capital ratio from 20% to 35%, calls for the development of enterprises, banks debt ratio should not exceed 65 percent, its own funds, lack of strength in real estate development companies will be difficult to have the opportunity to obtain credit from banks to support, a large number of development enterprises will be inadequate due to capital can not be started, which will help control the excessive growth of the scale of investment to curb the overheating of the economy control objectives.
资本的比例由20 ％上升到35 ％，要求企业的发展，银行负债率不得超过百分之六十五，其本身的资金，缺乏实力的房地产开发企业将很难有机会从银行获得贷款支持，大量的开发企业将由于资金不足，无法启动，这将有助于控制过快增长的投资规模，遏制经济过热的控制目标。