序

The proposed method doesn't need hardware synchronization circuit and can perform the calculation of fundamental positive sequence component of the supply voltage in real time.

这种方法不需要硬件同步电路，能实时地计算电源电压中的基波正序分量。在以DSP为平台的样机上进行了交流调压的实验。

A series ac voltage regulator based on a new fundamental positive sequence calculation method, which is utilized to generate the compensation voltage reference, is introduced in this paper.

针对串联型交流电压调节器，提出了一种新的基波正序计算方法以获取补偿电压的参考信号。

Some fundamental problem: about sequence stratigraphic analysis of coal basin.

含煤盆地层序地层分析的几个基本问题。

In the thesis, an advanced synchronous detecting method is proposed, which replaces the phase voltage by fundamental positive sequence voltage.

本文通过对传统同步检测算法的改进，提出利用PARK变换提取三相基波正序电压来代替相电压，弥补传统算法的不足。

However, because of the positive sequence of fundamental frequency, there are still some shortages for wavelet transform in the use of harmonic measurement of three-phase dissymmetrical system. A new approach of harmonic measurement based on Period-interleaving of MALLAT arithmetic for dissymmetrical system is put forward. Analysis and experiment based on TMS320LF2407 Digital Signal Processor are made. And the result of experiment reveals that the proposed method based on Period-interleaving is valid in the use of harmonic measurement of three-phase dissymmetrical system.

但是，目前小波变换在三相不对称系统的谐波检测中存在着无法分离基波正序信号的不足，本文就此提出了一种用于三相不对称系统的基于周期交错的小波MALLAT多分辨率分解的测量方法，详细介绍了该算法的原理、流程及计算公式，同时以TMS320LF2407数字信号处理器为核心建立了实验系统对该算法进行了实验，实验结果证明该周期交错－小波变换算法可以有效地检测出三相不对称系统中的有害电流。

The digital simulation can be used to obtain correct fundamental and third harmonic zero sequence voltages at the neutral and the terminal of the generator and flexiblely study the characteristics of various generator stator ground fault protection schemes.

为了研究这类方案，需正确地了解正常与故障条件下中性点与机端零序电压的分布情况。由于不可能在真机定子绕组上人为设置接地故障点，从而给继电的保护研究和调试带来了困难。

An optimal filter is designed specially for dq transform used in the voltage mea-surement of transfer switch,which is composed of lower-order notch filter and lower-order low pass filter with higher cut-off frequency in series.Its transfer function is presented by theoretical derivation.If the order is same,it is better in measuring the positive sequence of fundamental amplitude than the average filter and the low-pass filter.

针对转换开关电压检测法——dq变换设计了优化滤波器，该滤波器是利用低阶陷波滤波器和较高截止频率低阶低通滤波器串联形成的，通过理论推导给出了该滤波器的传递函数，在相同的滤波阶数下，该优化数字滤波器在提取基波正序幅值的性能比较中，优于平均值滤波法及低通数字滤波器法等。

Found a different cDNA library with Malasesiza furfur in hypha phase by Subtractive Hybridization; And sequencing some fragment of differential expression gene. Provid foundation for the further study on complete differential gene expression.

采用消减杂交技术建立了糠秕马拉色菌的差异cDNA文库；并对部分克隆片段进行测序，为今后获得完整的差异表达基因打下基础。

First, to isolate the total RNA both in hypha and yeast phase of Malasesiza furfur, Then reverse them to cDNA and found a different cDNA library with Malasesiza furfur in hypha phase by Subtractive Hybridization; At last, clone and sequencing the gene fragment on differential expression of Malasesiza furfur in hypha phase.

首先提取糠秕马拉色菌两相细胞的总RNA；然后逆转录生成两相细胞cDNA，运用消减杂交技术获得菌丝相细胞差异表达的cDNA，并建立差异文库：最后对差异cDNA片段克隆测序。

Since 1985, introduced from abroad garden glass ceramic production line, opened in prelude to the automated production, were also from Japan, Germany imported advanced equipment, production split brick, tile Spain, Japan watts, ancient building garden ceramics, imitation Danzhuan,- Stoneware tiles, high load-bearing slabs, and other international popularity of the new Building Ceramic.

自1985年从国外引进园林琉璃陶瓷生产线，揭开了自动化生产的序幕后，又相继从日本、德国引进先进设备，生产劈开砖、西班牙瓦、日本瓦、古建园林陶瓷、仿石砖、玉炻砖、高承重铺路砖等国际流行的新型建陶。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐