临界

Based on the fictitious crack model and critical crack tip opening displacement CTODc, the precritical crack propagation length △ac of concrete was determined by means of three point bending beams. According to the calculation value of △ac, the effective fracture toughness KunIc of concrete was evaluated.

本文采用虚拟裂缝模型，将临界裂缝尖端张开位移CTODc作为控制参数，利用三点弯曲梁试件通过迭代求得了混凝土裂缝亚临界扩展量的临界值△ac，据此求得了混凝土起裂断裂韧度KiniIc、等效断裂韧度KunIc值。

Furthermore, there is a lot of work to do for the design of reactor core.

本文给出了乏燃料临界实验装置的堆芯布置，并进行了堆芯临界计算工作，但对于临界装置的堆芯设计来说还有大量的工作要做。

In this paper, using the methods of Fourier transformation and moment-space renormalization group et al, we studied the phase transition of several complex Gauss systems, figured out the critical point and critical exponents of the system, simply discussed the critical problem of the system with long rang interactions and the universality of phase transition.

本文利用傅立叶变换和动量空间重整化群变换等方法，研究了一些复杂Gauss系统的相变和临界性质，求解了系统的临界温度和临界指数，简单地探讨了相变的普适性和系统中存在长程相互作用的问题。

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。

SOC phenomena does not appears in classical one dimensional sandpile model, but for two or three dimensional model, it does. However, some people did some experiments with rice and find the SOC existing in one dimensional rice pile, it is not fit with the classical sandpile model. Nobody explained this phenomena.

在经典的一维沙堆模型中，沙堆崩塌时并没有出现自组织临界现象，只有在二维以上的沙堆模型中才出现自组织临界现象，然而，后来有人用米粒做实验，发现一维米粒堆中存在自组织临界现象，这与经典的一维沙堆模型相违背，但是却没能对这种现象作出一个较好的解释。

A critical temperature of water is 100 degrees C--its boiling point at standard atmospheric pressure; critical mass; go critical .

水的临界温度是摄氏100度——标准大气压下的沸点；临界物质；达到临界。

The pressure drop along the horizontal wellhole was combined with the critical pressure drop of the bottom water-driven reservoirs, thus the relation between the critical pressure and the critical flow rate when the horizontal well originally put into production was researched,which provide a reference for the design.of the deliverability of the horizontal well used in the bottom water reservoir existing the bottom water coning.

把水平段压降和底水油藏临界压力结合起来，研究了考虑水平段压降时的水平井初期生产的临界压力和临界产量的关系，为存在底水锥进油藏水平井产能设计提供了参考依据。

The paper has experimentally studied the explosive limit ed oxygen concentration and critical oxygen concentration of effect of coal mine combustive gases.

目前对可燃性气体的临界氧浓度的研究大多数都是对单元气体进行的，通过对煤矿可燃性气体的爆炸极限氧浓度和临界氧浓度进行的实验研究，对煤矿可燃性气体临界氧浓度的影响因素进行了分析，得出的数据及结论为煤矿瓦斯的安全防爆工作提供了理论基础。

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

The effects of C/Fe on desulphur rate is obvious different from the influence on content of sulfur in DRI, the mechanics of desulphur of pellet bearing carbon in DR process depends strongly on the exist constitution of sulfur in it.

含碳球团中的硫酸盐硫将残留在DRI中，文章据此提出了临界内配碳比的概念，当内配碳比低于临界值时，提高内配碳可以同时起到加速还原和脱硫的作用，当内配碳比高于临界值时，将会造成DRI含硫超标。

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。