临界

Applying the concept of equivalent negative stiffness of axial forces, the approximate formula for the critical load of the system is suggested, and compared with theoretical results.

对伸臂位于项部的两层框架—筒体模型进行精确位移法分析，得到了结构有侧移失稳的临界荷载精确解。

First, in the composite hypothesis testing, circular dispersion error which is more practicable than horizontal and vertical error is used to discuss some problems of the dispersion of impact points; and the critical area of decision in the dispersion problem is analyzed; the specific expression of Bayesian risk is worked out, which ameliorates the method that only can get the approximate solution by calculating numerical integration.

由此，本文主要应用Bayes方法对以下几方面进行了探讨：首先，在复杂假设下，本文利用圆散布误差这一精度指标对落点散布鉴定问题进行研究，它比以往所用的纵、横向偏差精度指标更具现实意义；分析了此鉴定问题的决策临界区域；给出其Bayes风险的具体表达式，对用数值积分进行近似求解的方法进行了改进；在此基础上，通过极小化试验的风险确定最优试验数n，并讨论了决策中犯两类错误的概率，给出了验前信息的表示。

Also, some patients with chronic hepatitis B have widely fluctuating HBV DNA levels that may vary from undetectable to 2,000,000 IU/ml.117 Thus, serial monitoring of HBV DNA levels is more important than any single arbitrary cutoff value in prognostication and in determining the need for treatment.

而且，许多患有慢性乙型肝炎的患者，HBV DNA水平波动的幅度很大，可从测不出到10'7copies/ml之间变动。因此，为了预测病情和确定是否有治疗需要，对HBV DNA水平的连续检测比任何武断确定的单个临界值更为重要。

The discovery of superconductivity with a critical temperature higher than 40 K in the iron arsenide LnFeAs has drawn much interest in condensed matter physics.

最近，由于在铁基LnFeAs化合物及其相关化合物中发现具有高于40K的超导电性，层状的铁基化合物引起了凝聚态物理学界很大的兴趣和关注。在随后的研究中发现，在该类材料中最高超导临界温度可达到55K。

The main conclusions of this paper are as follows:(1) When the time is ascertainable, the paper builds two models under no profit and having profit. The conclusion tells us that when the price is different, the adoption strategy and threshold of the leader enterprise and the follower enterprise will change.

研究表明：（1）新技术到来时间确定的情况下，建立了两家企业无利润与存在利润流时的价值模型，结果表明市场产出价格处在不同区域内时领导企业、追随企业的采纳策略和采纳临界值会发生变化。

Assignable cause. Critical value. Ordinary least squareestimate. Process capability index ...

Keywords：可归属原因临界值最小平方法制程能力指标工具汰换工具磨损。

Secondly, by linearizing the system at the unique positive equilibrium solution and analyzing the associated characteristic equation, it is found that the positive equilibrium solution is asymptotically stable when the delay equals to zero and when it is increased to certain critical value, the positive equilibrium solution will loss the stability and a spatially heterohomogeneous periodic solution will bifurcate from this positive equilibrium solution.

通过在系统唯一的正平衡解处线性化系统和分析相应的特征方程，发现在时滞等于零时该正平衡解是渐近稳定的，当时滞逐渐增大到某个临界值时该正平衡解将失去稳定性而且在该平衡解处分支出空间非齐次的周期解。

Then, combing with the two lemmas above, we can compute the critical groups at infinity of the original functional precisely.

于是结合上面的两个引理，我们能精确地计算原泛函在无穷远处的临界群。

Then, we consider the Lyapunov-Schmidt reduction method from the Morse theoretical point of view. We prove that the critical groups at infinity of the reduced functional are isomorphic to those of the original functional.

接下来，我们从Morse理论的角度来考察著名的Lyapunov-Schmidt约化方法，证明了原泛函与约化后的泛函在无穷远处的临界群是同构的。

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

水的临界温度是100摄氏度——即在标准低气压下的沸点。

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。