临界的

The formula can be used in approximate calculation of instable critical load of high pier in the design and construction.

本文利用能量原理的Ritz法，在对截面惯性矩变化作线性假定后，推导出变截面空心薄壁高墩失稳临界荷载近似计算公式，可用于设计施工中对高墩失稳临界荷载的近似计算。1中心压杆稳定理论及能量原理中心压杆的失稳问题是稳定问题中的一个最基本的问题。

Choosing time delay as the control parameter, the stability of trivial equilibrium is discussed by analyzing distribution of the roots of the associated characteristic equation. It is found that Hopf bifurcation occurs from trivial equilibrium when the delay passes through critical values, then the critical values and their relations with system control parameters are obtained.

以时滞量为参数，通过分析对应线性系统特征方程的根的分布，讨论了平凡解的稳定性，得到了平凡解发生Hopf分岔而失稳的临界时滞量以及临界时滞量与系统控制参数的关系。

The low-dimensional Galerkin method is generalized to solve the flow around arbi-trarily translating circular cylinder.Active control problems of wakes behind circularcylinders are numerically investigated by only small number of modes.The in-line andtransverse oscillation of a circular cylinder with proper frequency produce Karman vor-tex street successfully in some subcritical regime,vhereas the transverse oscillation of acircular cylinder with 1.8 times the natural shedding frequency can effectively suppressthe Karman vortex street at a slightly supercritical Re.

将低维Galerkin方法推广至可以求解任意平移运动圆柱的绕流问题，用较少的模数值研究了圆柱尾迹的主动控制问题，在亚临界Re数下圆柱以适当的频率沿流向和横向振动均成功地激发出Karman涡街；而在略高于临界Re数下圆柱以1.8倍自然脱涡频率沿横向振动明显地抑制了Karman涡街；再现了超临界Re数横向及流向振动圆柱绕流的频率锁定等复杂非线性现象。

In this paper, it is pointed out that the accuracy of measurement must be considered for the discussion about the restitution time of damped vibration, and it is in the "critical state of weakly damped vibration" defined by this paper, not the critical damping state, that the restitution time is the shortest.

1 问题的提出和回复时间的定义众所周知，阻尼振动按阻尼的大小可分为弱阻尼、临界阻尼和过阻尼三种情形。几乎所有的教材均指出，临界阻尼运动是物体刚能不做周期性运动而又最快地回到平衡位置的运动，也即其回复时间最短。

The thermodecomposition of Li〓CO〓 charge was experimented and studied in a specially made vacuum furnace. The relationship of decomposition rate with temperature, pressure and time were obtained. The important principle of decomposition rate effected by pressure was acquired and conception of critical decomposition-pressure was presented.

在特制的真空炉内对碳酸锂物料真空分解进行了试验，得到了分解率与温度、压力、时间的关系；得到了分解率受压力影响的重要规律，据此提出了分解临界压力的概念，总结出了分解临界压力与温度的关系。

During the monofactor hydrocarbon expulsion stage, oil saturation is the only controling factor to the expulsion of hydrocarbons, and the driving force of hydrocarbon expulsion is compaction; in the difactor hydrocarbon expulsion stage, the expulsion of hydrocarbons is doubly controlled by critical oil saturation and critical...

在单因素排烃阶段，含油饱和度是烃类排出的唯一控制因素，排烃的动力是压实作用；在双因素排烃阶段，排烃受临界含油饱和度和临界破裂压力的双重控制，排烃的动力是流体超压。

During the monofactor hydrocarbon-expulsion stage, oil saturation is the only controling factor to the expulsion of hydrocarbons, and the driving force of hydrocarbon expulsion is compaction; in the difactor hydrocarbon-expulsion stage, the expulsion of hydrocarbons is doubly controlled by critical oil saturation and critical fracturing pressure, and the driving force of hydrocarbon expulsion is fluid overpressure.

在单因素排烃阶段，含油饱和度是烃类排出的唯一控制因素，排烃的动力是压实作用；在双因素排烃阶段，排烃受临界含油饱和度和临界破裂压力的双重控制，排烃的动力是流体超压。

A safe region,which is defined according the critical hydrate volume concentrations,is firstly proposed for hydrate slurry,and it can be used to judge if the pipeline can be run safely or not.

通过与其他研究的比较，以临界水合物体积浓度为判断标准定义了一个流动安全区，当管道中的水合物体积浓度小于临界值，可以认为是安全的，相反则认为管道存在水合物堵塞的威胁。

Especially,in setting of the right turn lane,this paper establishes the critical volume models of setting the right turn vehicle phase and the pedestrians phase in separately,and effective proposes the method of calculating the critical value.

尤其是针对设置了右转专用车道情况下，通过设计右转车辆与行人相位分开设置情况下的流量临界模型，提出了设置二者的相位分开设置的临界值的计算方法。

An everyday example of Ostwald ripening is the recrystallization of water within ice cream which gives old ice cream a gritty, crunchy texture.

Ostwald发生的过程包括小于一个临界尺寸的粒子的溶解，然后质量转移到大于这个临界尺寸的粒子上。

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。