unstable state

A Research on Unstable State of Backward Extrusion Pressing

反挤压不稳定状态的研究

When the crank rotates at the speed of 20 rad/ s, mechanisms are in an unstable state, at an angle of about 300 °, the actual clearances are below the radium of clearances, pairs lose contact, which results in collision between them;

当曲柄以低速20rad/s转动时，系统处于极不稳定的震荡状态，在转至300°左右时，运动副间隙小于半径间隙，脱离接触，发生明显的分离碰撞现象。

His mental state is unstable, so he looks unfit for duty.

他的心态极不稳定, 因此他不适合服兵役.

Molecules excited electronically, are unstable relative to the ground state.

相对于基态来说,电子被激发了的分子是不稳定的.

At unstable state the formula of calculating unstable time using tangent angle is established.

对于失稳的情况，建立了用割线角估算失稳时间的一般公式。

When the motion of the basic state is the shear flow ( or the differential rotation), this property means that the unstable waves would evolve automatically into the quasi-stationary stage.

当基态运动为剪切流（或较差旋转）时，这一性质将使不稳定波自动演化到准稳阶段。

If there are orthogonal regions, the outermost unstable state is first tried for a reaction.

如果存在正交区域, 则最外层的不稳定状态被首先尝试作出反应.

This paper analyses principle, error, and unstable state of determining the electric stop watch by means of time-interval method of electric counter. A simple gate-control method is presented at last.

分析了电子计数器时间间隔法测定电秒表的原理、误差及不稳定性，并且介绍了一种简便的门控法。

Therefore, under the action of temperature stress, if getting rid of thermal shock effect, only need to consider the steady state of thermal flow and not necessary to think of the transient state of unstable thermal flow.

因此，在温度应力作用下，如果排除热冲击效应，只需考虑热流稳定状态，而不必考虑热流未稳定的瞬间状态。