临界状态

The principle of the optical differentiator is that when the silicon-based annular cavity resonator meets or is close to a critical coupling state, the spectra characteristic of the silicon-based annular cavity resonator is quite similar to the differentiator within certain range with the resonant wavelength as the center.

本发明的原理是当硅基环形谐振腔满足或接近临界耦合状态时，其在谐振波长为中心的一定范围内的频谱特性是微分器的很好的近似。

Experiment data prove existence of the critical pendulum angle and validity of state gain controller.

在构建的实验中，具体的测试数据也有力的证明临界摆角的存在和状态增益法设计控制器的有效性。

In the spark, operating under the critical damping state, with flash time at about 2 X 10-6 Sec., the ion lines of higher excitation potential first appear and appear shortly.

在放电时间约为2×10~(-6)秒，工作于临界阻尼状态下的火花中，激发电位高的离子线先出现，而且很短暂。

This equation of state can be used in thermodynamic calculation for systems with components in the critical region.

扩展了理论状态方程的适用性，可望用于各种含临界区域流体体系的热力学计算

Both will break at the same critical state of stress .

两者将在相同的临界压力状态下破碎。

The results showed that from the measurement of the time ratio of metal contact,the transition of lubrication status can be monitored and the corresponding critical transition velocity can be detected.

根据测得的金属接触时间比率－滑动速度曲线的变化趋势，可以清楚地判断出润滑状态的转化及对应的临界转化速度。

According to generalized modular design, finite element models of each function module are built in ANSYS, which belong to pre-tightening frame of 45 MN forging press. MPC banded contact is used to simulate the connection of two fixed parts, while standard contact is used to simulate the connection of two dissociable parts, Deformations and stresses of the forging press under two working conditions are discussed, which provide good guides to the design of such kind of press.

依据广义模块化设计原理，在ANSYS中分别建立了45MN锻压机预紧组合机架各个功能模块的有限元模型，采用MPC绑定接触模拟闭合模块间的连接，标准接触模拟可开裂模块间的连接，分别讨论了空载和临界载荷两种状态下机架的变形和应力分布，计算方法和计算结果为此类机架的分析、设计提供参考和指导。

There are four emphases in -research, for instance, flow state in pipeline, distribution of concentration and velocity, deposition-limit velocity and calculation of flow resistance or head loss.

研究重点主要集中在管内流动状态、浓度和速度分布、临界流速及阻力损失计算四个方面。

The experiments indicate that the dynamic behavior of the cylinder under the axial fluid-solid impact loading differs from the dynamic buckling when they are axially impacted by impulsive loads and step loads of infinite duration. The structures exhibit three different critical conditions: plastic incipience, dynamic buckling and plastic failure.

研究结果表明：圆柱壳承受轴向流固冲击时的动力特性与承受轴向脉冲和阶跃载荷时的动力特性有着显著的不同，结构呈现三种不同的临界动力状态：塑性出现、动力屈曲和动力塑性失效。

The critical point means such a state that all the differences between gas and liquid disappear completely,being a most important parameter of dividing the types of fluid and being widely verified in both theory and practice.Currently,four methods of determining critical point are summarized as follows:①laboratory measurement through examining critical opalescence or recording the bubble point and dew point curves;②empiric relation;③calculation of the bubble point and dew point curves by PVT software;and ④ direct calculation according to thermodynamic theories.

随后对临界点进行确定，临界点是气液一切性质差异均消失的状态，是区分流体类型最重要的参数，并得到了理论和工程应用的广泛验证，目前确定临界点大致有四种方法：①实验测定，通过观察临界乳光现象或记录流体的泡点和露点线；②经验关系式；③通过PVT软件计算流体的泡点和露点线；④利用热力学理论直接计算。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。