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Single loop instantaneous voltage feedback control and multiple loop feedback control, which can be realized by digital method or analogue method, are normal control strategies of inverter. The controller's performance of a same control strategy designed by different designers is different This paper makes out uniform analysis and design theory of inverter control strategies with pole-assignment technique of state-space theory for the first time. It is firstly proposed that controller parameters being equal to control system orders is the base of realizing high performance inverter. Design and performance comparability of various controllers is presented with uniform pole-assignment method.

本文首次采用状态空间理论的极点配置技术，对逆变电源的几种控制策略进行了统一的分析和设计，首次提出控制器控制参数与控制系统阶数相等是高性能逆变器控制实现的基础，并通过极点配置这种统一的设计方法对各种控制器进行了设计和性能比较，分析了要考虑的一些非理想因素的影响。

This is equal to the theory analysis.

这与我们理论分析的结果是完全一致的。

They never be equal since the ancientry long time ago until nowaday.

不可能，从古至今贫富间从来都不曾有什么平等。

What the client cannot readily judge is whether the law firm put in excessive hours on the case, and the result, according to persistent and cumulatively persuasive anecdotage, is a tendency for law firms to invest hours in a case beyond the point at which the marginal value of the additional hour is just equal to the marginal cost to the client.

客户对于律师是否在案件上花费了额外的时间并不能做出轻易的判断，经过长期的积攒起来的极具说服力的记录，结果出现了律师事务所花费的时间超出了一个均衡点的趋势，在该点，律师所花费额外时间的边际收益等于客户的边际成本。

Anencephaly and spina bifida, with an approximately equal prealence, account for 95% of the cases and cephalocele for the remaining 5%.

然而大多数NTD的确切病因仍不清楚，一个母亲或以前的同胞有NTD，则再发率是5-10%。围产期给与叶酸补充可以减少一半的发生。

The angle subtended at the center of a sphere by an area on its surface numerically equal to the square of the radius.

在单位半径的球体中心对球表面上的投影面积所张的角。

the conditions of acquisition of minimum deviation is proved by means of rolle's theorem and the reversibility principle of beam path for triple prism, it is that the angle of incidence is equal to the angle of emergence for monochromatic incident beam.

利用数学中的罗尔中值定理及光路的可逆性原理证明了三棱镜获得最小偏向角的条件，即单色光线的入射角等于出射角。

Is equal to angle of reflection and hit the green target object?

并点击绿色的目标对象？

The Law of Reflection states that the angle of reflection of a light ray is equal to the angle of incidence.

反射定律为光线的反射角等於入射角。

T: Yes, when a light ray is incident upon a reflecting surface, the angle of reflection is equal to the angle of incidence.

当光线射到界面上，反射角等于入射角；入射光线、反射光线与法线在同一个平面内。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。