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Requirement for arc voltage during opening of field breaker is higher and higher, for de-excitation with varistor ,generally adopted for large hydraulic generator. In fact, E.M.Fof field winding is required higher than threshold of varistor during opening of field breaker.

大型水轮发电机通常采用的非线性电阻灭磁的方法，对灭磁开关的开断弧压要求愈来愈高，其机理是要求开关开断时，磁场绕组的自感电势大於非线性电阻的残压。

In oreder to strengthen and improve the ideological and political education, and to improve its focalization and efficiency, based on the basic characteristics of the higher vocational institue and linked with the characteristics of the ideological and political education in higher vocational institue, the author deeply analyzes the main problems and roots in recent higher vocational institues of our country, and put forward the relevant thinkings and solutions.

为进一步加强和改进高职院校学生思想政治工作，提高学生思想政治工作的针对性和有效性，本文从高职学生的基本特征出发，结合高职教育的培养目标、基本特征以及高职院校学生思想政治工作的特点，对现阶段我国高职院校学生思想政治工作存在的主要问题和根源进行了深入的分析，提出了完善高职学生思想政治工作的思路和对策。

In Chapter 2, the basic knowledge of higher—order spectra is introduced. The relationship of higher—order cumulants and higher—order spectra between input and output of a linear—time—invariant system driven by a non—Gaussian process is analyzed.

本论文的目的在于，以高阶统计量作为信号处理的工具，研究非最小相位随机信号建模以及噪声中的谐波恢复问题。

The main reasons for the higher efficiency are the elimination of the water pump, the elimination of the water heat exchanger (which is a source of heat losses), and the phase change of the refrigerant in the ground itself, allowing a higher temperature gradient between loop and ground resulting in a higher rate of heat transfer.

为高效率的主要原因是水的泵，水的热交换（这是一个消除热损失的来源），以及本身在地面制冷剂相变，从而使一回路和地面之间的热传递率较高导致较高的温度梯度。

The results showed that the POD activity was higher in the sporophyll than that in the stems and leaves in which the POD activities were weak from bottom to top in native plant. For the Japanese plant, the POD activities of the stems and leaves were the same in all positions. However, the activity was slightly higher in mid-portion of a leaf than that in stems. The high enzyme activities were observed in mid-bottom stems in the half-bred plant, and the activity was higher in bottom leaf than that in mid-top leaf.

结果表明：3个裙带菜群体的POD同工酶其孢子叶活力都相对强于其它部位；日本裙带菜茎和叶的各部位POD酶活力相同，但叶中部的酶活力稍强于茎；自育裙带菜茎底部和茎中部的POD酶活力较强些，而叶底部的酶活力较叶中部和顶部的强；本地裙带菜的茎和叶由底部到顶部POD酶活力逐渐变弱。

The theory adapted to the demand of Hesperian scale expansion of higher education, and supplied an instruction about scale expansion in the argument of higher education developing direction for Occident, effecting the higher education's diversification.

它适应了当时西方社会高等教育扩大规模的要求，为当时欧美国家关于高等教育发展方向的论争提供了一个关于规模扩张的理论导向，对高等教育走向多样化有深远影响。

Each time an uninsured American steps foot into an emergency room with no way to reimburse the hospital for care, the cost is handed over to every American family as a bill of about $1,000 that is reflected in higher taxes, higher premiums, and higher health care costs; a hidden tax that will be cut as we insure all Americans.

每一次，当一个没有保险的美国人拖着脚走进急诊室，却无法支付其医疗费用的时候，这样的成本便会以一张1000美元的账单的形式转嫁到每个美国家庭：更高的税负、更高的保险费和更高的医疗成本。因此，如果我们为每个美国人提供医疗保险，我们便能减少大量的隐性税负。

"Higher Algebra" is a 1978 book "Higher Algebra" in the third edition. 1978 edition was compiled by the authors of their "Higher Algebra Lecture"(1964),"A Concise Course in Advanced Algebra"(1965) based on the changes made of.

高等代数》是1978年出版的《高等代数》的第三版。1978年版则是作者在他们所编的《高等代数讲义》（1964年）、《高等代数简明教程》（1965年）的基础上修改而成的。

Scientific and technological innovation is one of the function of higher education and a giant project for the higher technological innovation of the higher eduction, which contains unity, opening, mobility, incertitude and self organization.

科技创新是高校的功能之一，高校技术创新是一项庞大的系统工程，具有整体性、开放性、动态性、不确定性和自组织性特征。

Therefore, for the smooth implementation of the exchange, the promotion of the quality of our national higher education, and the cultivation of more excellent higher-quality talents for the modernization of Socialism with Chinese characteristics, the administration and management departments of higher education should establish and perfect the laws and regulations of the interscholastic communications. Each college must establish and improve interuniversity regulations and related regulatory authorities, clear responsibilities, improve the quality of teaching management, reform the foreign languages teaching, establish special funds, scholarship and students grants for exchanging.

为此，建议我国高等教育行政管理部门尽快制定和完善高校学生校际交流的相关法规制度，各高校应制定和完善内部规章制度，并建立和完善校际交流的有关机构，明确职责，提高教学管理水平和质量，改革外语教学，设立校际交流专项经费和校际交流奖学金、助学金等，以保障本科生校际交流的顺利实施，提高我国高等教育的水平和质量，为中国特色社会主义现代化建设培养更多优秀的高素质人才。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。