易于

It is very easy to operate, with a simple, intuitive interface with touch screen controls.

这是非常易于操作，具有简单，直观的界面，触摸屏控制。

Invar 36 is a kind of low expansion alloy, and it is difficult to machine because of its plastic, ductility and low heat conductivity. During Grinding, the part surface is easy to burn and wound for high grinding temperature and wheel adhesion.

Invar 36是一种低膨胀合金，其塑性大、韧性高、热导率低，磨削时所产生的磨削力大，磨削温度高，工件表面易于烧伤和划伤，对砂轮的粘附较严重，属于典型的难于加工材料。

The classifier is invariant to rotation and translation and it is simple with less computation and easy to realize.

该方法对指纹的平移和旋转具有无关性，计算量小，易于实现。

The inverse polynomial and the invertible affine transformation exist by the finite field, linear algebra and matrix theory. The invertible affine transformation and the inversion in are easily realized by using lookup table. An algorithm can be used to get the inverse element of modulo .

本文运用有限域、线性代数和矩阵理论，论证了逆多项式和逆仿射的存在性，并且应用查表法简捷地实现了中元素的求逆和逆仿射变换；设计了一个易于在在计算机上实现的算法，来求形如的多项式模时的逆元，该多项式的系数在上。

Presents the design of longitudinal control for ASTOVL lift-fan aircraft, a multi-variable, strong-coupling, complicated nonlinear system to make the system nonlinear offset and decouple, and the method used for linear system in designing the system to gain expectant flying qualities and the combination of aerodynamic control surfaces with thrust vectors to delay the control surfaces getting into saturation, and the minimum N-norm generalized inverse theorem of weighted generalized inverse adopted to apportion the moments commands, which make the control surfaces gain appropriate deflection and the simulation results to verify the dynamic inverse control laws designed really make the system nonlinear offset and decouple; when one command is given, only this output will response, and others do not response; when all commands are given together, the responses will be just the linear superpose of the response of each command, therefore the operation of the pilot will be simplified greatly.

摘 要： ASTOVL升力风扇飞机是多变量、强耦合、复杂的非线性系统，采用非线性动态逆理论设计控制律以实现系统的非线性对消及解耦，然后，采用线性系统的设计方法对系统进行设计，以使系统获得期望的飞行品质。同时，考虑到ASTOVL升力风扇飞机是由气动舵面和推力矢量融合作用的，为了延缓各舵面进入饱和的时间，采用加权广义逆中的极小N-范数广义逆定理分配力矩指令，从而使各舵面达到适当的偏转角。并将所设计的控制律进行了仿真，结果验证了所设计的动态逆控制律使系统实现了非线性对消和解耦，单个指令作用时，只有该项响应，其余不受影响；所有指令作用时，其结果就等于单个指令作用时的线性叠加，这样使驾驶员的操纵大大简化而易于控制，从而大大降低了飞行事故率。

Finally, A class of inverse Riemann boundary value problem for bianalytic functions on the real axis is proposed.

先消去参变未知函数，再采用易于推广的矩阵形式记法，可把该问题转化为两个实轴上的解析函数Riemann边值问题。

The algorithm is simple and easy to implement, it also has good security property, robustness and invisibility.

算法简单且易于实现，并具有较好的安全性、鲁棒性和不可见性。

The result shows that this is a easy-operating way with the fast determination and high accuracy. It is less disturbed, the changing of the colors is acuity and the end point is easily estimated. The result of this method is very much accurate than that in the iodometry. RSD%=0.3%, and R is between 97.56 % and 101.08%. The result, got according to this method, is much better by the students experiment.

实验表明，这种方法操作简单、测定快速、准确度高、干扰小且颜色变化敏锐，终点易于判断，测定结果的准确度远远高于间接碘量法，其相对标准偏差RSD%=0.3%，加标回收率为

That will make it easier to introduce the multi-winner form of IRV for reps balanced right and left of center.

这将使其更易于采用多形式的通气冠军的代表左，右平衡的中心。

The general equation of crack opening displacement in transversely isotropic body is easy to be obtained by means of the method in this paper.

横观各向同性体中，埋藏裂纹方位任意时的裂纹张开位移方程，根据本文的方法易于得到。

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。