临界的

This value is prescribed only vaguely by many authors with no reference to any significance level. This paper will give out an asymptotic critical value in a fixed significance level and an asymptotic p-value for testing by means of extreme value theory in order to detect outliers in AR model.

本文运用极值理论给出诊断AR模型异常点选取临界值的分布近似方法，这种方法选取的临界值可保证控制在一定的显著性水平下，而且还可以计算出检验的渐近p值，比一般仿真选取的临界值更科学合理。

From the numerical results of critical conicity calculatians for bogies with different steering stiffness and different construction parameters, the paper concludes that the low conicity instability can be reduced by means of optimizing the bogie parameters to a va...

得到不同导向刚度下产生失稳的临界踏面锥度和不同锥度下的临界速度值。研究发现，通过参数的合理匹配，可使临界锥度降至常见最小锥度以下，从而可以避免低锥度失稳，为迫导向转向架的参数设计提出了一个新的准则。

The examples show: It is not only scientific and rational approximately, but also as referenced calculational methods of threshold quanlity of increased or emendatory chemical substance in the "Identifecation of major hazard installations "(GB18218-2000) in the future, that appliance respective of TNT equivalent method, gasoline equivalent method, methane equivalent method, methl ethyl ketone peroxide equivalent method and hydrogen sulfide equivalent method for the rhrehold quanlity in the work site and store area of volatile substance, combustible liquid substance, combustible gaseous substance, active chemical substance and poisonous substance. At the same time, Comparing with the death radius method and evaluative method of combustible, volatile, poisonous mojor hazardinstalltions, hazard grading method of hazard degree grading in the chemical factory for the major hazard installations is simplerof operation and more practical of calcutating result, and have some significance on generalizer.

实例验证表明：TNT当量法、汽油当量法、甲烷当量法和过氧化甲乙酮当量法分别对爆炸性物质、易燃液体物质、易燃气体物质和活性化学物质的临界量确定，具有一定的科学性和合理性，可作为《重大危险源辨识》(GB18218-2000)中临界量数值修订和危险物质扩充时进行临界量确定的参考计算方法，同时，化工厂危险程度的重大危险源分级法与易燃、易爆和有毒重大危险源评价法和死亡半径法相比，评估过程简单易行，分级结果符合实际，具有较强的可操作性和一定的推广意义。

The main works include: 1. successfully observed the opalescence of critical methanol and the phase variation of PET degradation in methanol, studied the internal construction of PET in different stages of degradation, provided the conception of critical region and noncritical region of system in which PET and methanol participated.

主要内容如下： 1 实验观测了甲醇的临界乳光现象及PET在甲醇中降解的相态变化，同时研究了不同降解反应阶段PET内部结构特征，在本实验研究的范围内提出了PET在甲醇中的系统临界区域和非临界区域的概念。

The result shows that the changing law of saliferous reservoir parameters is a nonlinear relationship with several variables, and it is a very complicated process.

研究结果表明，高含盐油藏储层参数变化呈多元非线性函数关系，变化规律复杂；渗透率变化存在临界值，大于临界值时，渗透率随着驱替速度、驱替量和含盐量的增加而增大，小于临界值时，渗透率随着驱替速度、驱替量和含盐量的增加而减小；注入水性质会对参数变化过程有影响，而对最终变化结果无影响；盐的溶解是储层参数变化的根本原因，岩石颗粒的脱落和运移是储层参数变化的直接原因。

The analysis model of nonlinear finite element of this structure is established, and the describable method of initial displacement is given. Using the analysis model, the influence of different thickness of steel web and different initial displacement on load bearing capacity and critical load of a steel concrete continuoes composite beam is analyzed.

建立了钢混凝土组合结构的非线性有限元分析模型，给出了初始挠曲的定量描述方法，分析了不同厚度腹板连续组合梁的失稳临界荷载，不同初始挠曲对相同厚度腹板的极限承载力和失稳临界荷载的影响，以及相同初始挠曲对不同厚度腹板的极限承载力和失稳临界荷载的影响

A new method and the principle is presented for plotting the critical metacentric height curve which meets IMOs intact stability criteria and weather criteria,and the critical metacentric height curve which meets 1976 SOLAS intact stability criteria. And the critical metacentric height curve is used in the Stability check of bulk grain carriers in accordance with the stability rules for bulk grain carriers.

本文还具体给出了满足IMO完整稳性和天气衡准的临界初稳性高度的求作方法，以及满足1976 SOLAS公约散装谷物船舶的稳性衡准要求的临界初稳性高度的原理和求作方法，并将由此得到的临界初稳性高度曲线综合运用到散装谷物船舶的稳性校核。

The thesis makes a wellbore pressure and temperature distribution allegiance calculation forecasting model which takes the seawater temperature field and coefficient of heat transmission into account based on the study of the related theories. And the thesis makes a research of the impact of Reynolds Number upon drag coefficient based on the classical Tunner Droplet Model, and makes the critical flow rate model of liquid lift for Ya 13-1 gas field from the perspective of security.

通过理论研究，建立了考虑海水温度场及传热系数的适用于崖13-1气田的井筒压力、温度分布耦合计算预测模型；从气井积液机理研究出发，建立了高低气液比携液临界流量的计算模型，在高气液比携液临界模型的推导中，以经典的Tunner液滴模型为基础，研究了雷诺数对曳力系数的影响，从安全考虑建立了适用于崖13-1气田的携液临界模型。

In this paper, we describe the characteristics of near critical hydrocarbon system and summarize the development and application of empirical and unempirical EOS in near critical fluid about PVT phase analog. A lot of experiments should be done in the future in order to find out an EOS which is suited to near-critical hydrocarbon system and obtain a theoretical breakthrough.

对近临界流体的特殊性质进行了描述，并对近年来经典和非经典状态方程在近临界流体PVT相态特征模拟计算方面的发展及应用现状进行了总结，指出要找到适用于近临界流体的状态方程还有很多工作要做，需要大量的实验数据支持以及理论上的突破。

Be able to explode ignites （3000Till 4000 ℃,This also is living over-dose air and the numeric value when possesing remains waste gas only ,In case according to the ideal air/fuel ratio layout ,There is not waste gas ,The temperature gathering is taller ）Oil30 grams may be cause （90℃ tail gas preheats ）Steamization （Vaporization heat 2282.7J\g ）……At the respect of the pressure swelling ,Even if being in the critical of water （374℃）Condition ,Critical pressure 21.83MPa of water 、Carbon dioxide critical（31.1℃）Pressure 7.38MPa also is some -fold of a rule piston style explosive motor pressure 5--9MPa （Dalton's Law or the Law of Additive pressures）……For emploing the capacity means difference ,Therefore the composition is different as black and white .

一克爆燃（3000至4000摄氏度，这也只是在过量空气和有残余废气时的数值，如果按理想空燃比配置，没有废气，温度会更高）的油可以使30克（90摄氏度尾气预热）的水汽化（汽化热2282.7J\g）……从膨胀压力方面来说，即使处于水的临界（374摄氏度）状态，水的临界压力21.83MPa、二氧化碳的临界（31.1摄氏度）压力7。 38MPa也是常规活塞式内燃机压力5--9MPa的几倍（压力叠加定律，道尔顿定律）……因为用能方式不同，所以结构就截然不同。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。