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Based on the original research of the high order single step method ,this paper makes the research on the applicability of this method for the analytic expression of stiffness.

本文在原有高阶单步法研究的基础上对刚度为时间解析函数时方法的适用性进行了研究。

Based on which, a necessary and sufficient condition for the existence of controllers is derived and the analytic expression of expected controllers is proposed.

汽约束下具有鲁棒稳定性的充要条件，在此基础上，得到了Delta算子系统状态反馈控制器存在的充要条件和解析表达式。

A succinct analytic expression can not be obtained, when the reachability graph of the ASPN is very large.

由于ASPN的可达图很大时不能得到简洁的表达式，为克服这个难点，我们又提出了矩阵矩母函数方法。

The analytic expression of the relationship between the refractive-index of the fluid and the power rate is obtained via fitting.

这种方法能够有效地消除仪器的不稳定性、内部损耗和环境影响带来的测量误差，提高测量精度。

Then analytic expression of continuous relaxation time spectrum is obtained by correlative calculation method.

松弛时间谱是粘弹性函数的核心，获得连续松弛时间谱一直是难点问题。

The necessary and sufficient conditions for the existence of this class of controllers are given,and the analytic expression of desired controllers is also stated.

该文基于Lyapunov稳定性理论，研究了一般的不确定线性时滞系统的鲁棒稳定控制器设计问题，给出了此类控制器存在的充要条件和解析表达式。

In the case of ensuring the continuity of the wavefunction and the closing of the current, the analytic expression of the transmission coefficient is derived and the transmission properties are analysed.

在满足波函数的连续性以及电流的闭合性的情况下，得出了透射系数的解析表达式，并根据此表达式分析了电子的输运特性。

According to coherent population oscillation and gain theory, the analytic expression of the group index from rate equation is obtained.

根据布居振荡效应及增益理论，由速率方程出发，得到了探测光的群折射率的理论解析表达式。

It is difficult to get the accurate analytic expression dependent on temperature and wavelength through theoretical derivation,because phase transition mechanism is complex.

因为相变机制的复杂性，很难从理论上推导出相变前后光学常数随波长和温度变化的解析表达式。

Under Swerling Ⅱ assumption, the analytic expression of P in homogeneous background is derived.

在SwerlingⅡ型目标假设下，推导出ACCAGO-CFAR在均匀背景下虚警概率P的解析表达式。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。