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A decoupling control approach based on inverse system method had been applied for the permanent magnet synchronous motor, which was multi-variable, nonlinear and coupled system. PMSM was decoupled into second-order linear speed subsystem and first-order linear flux subsystem. The servo robust controller was used to design linear closed-loop controller for the pseudo-linear subsystems.

针对永磁同步电机这种多变量、非线性、强耦合的控制对象，应用逆系统方法，将永磁同步电机解耦成二阶线性转速子系统和一阶线性磁链子系统；在此基础上，采用鲁棒伺服控制器对伪线性子系统进行线性闭环控制设计。

Based on the approach of turning some of the relevant extreme-value-type and logarithmic normal distribution variables into independent and normal random variables, the shear-slipping failure probability of a high arch dam is worked out to be of the order of magnitude of 10^(-5) by means of second-order moment method.

在将部分相关的极值型与对数正态分布随机变量转换为独立、正态随机变量的基础上，利用二阶矩法计算得到某高拱坝的剪滑失效概率为10^(-5)量级。

When the flow of the river and the capability of the river diversion follow normal distribution or logarithmic Normal distribution or Pearson—Ⅲ distribution, the point estimation and the one order or two order approximately interval estimation of the risk probability of the criteria of river diversion are given.

并根据河道来流量和导流系统设计泄流能力分别服从正态分布、对数正态分布以及皮尔逊—Ⅲ型分布的分布形式，给出了施工导流标准风险率的点估计和一阶、二阶近似区间估计的计算公式。

Calculation formulae for real number order derivative and integral of logarithmic functions and power functions have been obtained which are the important references to calculate real number order calculus of any other functions.

计算得出了对数函数、幂函数的任意实数阶导数及积分的完整计算公式，它们是推导其它函数任意实数阶微积分公式的重要参照式。

The similarity logic calculus systems based on incomplete information and incomplete case knowledge is constructed by using a first order modal logic and a simplified second order predicate calculus. The grammar、semantics and inference rule are described.

采用传统的一阶模态谓词逻辑和简化的二阶谓词逻辑分别构建了基于信息不完整和实例知识不完整的相似性逻辑演算系统IISL和IKSL，给出了系统的语法、语义和推理规则。

Experimental results show that the refractive index modulation can reach about 0.010; and the depth of surface relief is low to about 0.7~12.4nm, which will be lower than 1nm in the gratings with 200~400nm period(according to the first-order and second-order DFB grating period of organic semiconductor lasers).

实验结果表明，折射率调制幅度较高，可以达到0.010左右；表面起伏很低，约0.7~12.4nm，在周期为200~400nm(对应于有机半导体激光器的一级和二级DFB光栅周期)的聚合物光栅中，表面起伏深度小于1nm。

The assembly language is the low-level language, realizes the mathematical operations and the input output with it obviously wants difficult many compared to the higher order language, we output in the realization, not merely needs to know the input the order and the form, but also must have the understanding to its realization method.

汇编语言是低级语言，用它来实现四则运算及输入输出显然比高级语言要难的多，我们在实现输出的时候，并不仅仅需要知道输入的命令及其格式，还要对其实现方法有所了解。

Also, the characteristics of the lower order frequencies and the lower order mode of vibration are found out.

模态分析是动力学计算的基础，为动力学分析计算提供了必要的模态参数。

An element with greater stack order is always in front of another element with lower stack order.

有着较大的值的元素会堆叠在较小值元素的上面。

In order to make money, in order to build a house,......," said the lumberjack look of indifference."

为了赚钱，为了造房子，……"伐木工人一脸无所谓的说。"

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％。