在进行中

Among the fish which were cytogenetically studied, most of them do not possess any morphologically differentiated sex chromosomes. On the other hand, karyotypic analysis, chromosome binding, synaptonemal complex observation and comparative genomic hybridization show in few fish species, that there exist sex chromosomes which differentiated at different levels and types.

在进行过细胞遗传学研究的鱼类中，绝大部分没有发现异形性染色体，然而通过核型分析、染色体显带、联会复合体观察和比较基因组杂交等方法，发现在少部分鱼类中确实存在有异形分化的性染色体，并且分化程度高低不等，性别决定方式多种多样。

In this paper, a long divinable time evaluation and a short time prediction of some vibration signals of a turbine generator set is processed by the largest Lyapunov exponent mode. And the results show that the method is certainly accurate and reliable to predict future state of a turbine generator set. As a matter of fact, the method can be used to prediction to future running state of any other complex mechanical equipment.

运用最大Lyapunov指数预测模式对发电机组振动信号进行了最长可预测时间估计和短期预测研究，结果证明基于最大Lyapunov指数的预测模式在进行发电机组时序信号预测中具有良好的预测精度和可信度。

Both kinds of algorithms can improve the static and dynamitic characteristics of the system, and meet the design requirements.

在进行系统整体设计和软、硬件设计时，本文充分考虑了系统的实际工况，设置了手柄信号中位死区，以消除系统的误动作；同时，为适应比例阀的工作频率，利用单片机对PWM输出信号进行了分频处理，保证了通过比例阀的平均电流值不变。

The tactile finger system in the operation is to grasp vessel ectoblastic or operation device, such as suturing needle, to inspect and modify the grasping force and exchange the end device, such as operation scissor or operation sword to achieve the operation of snipping and cutting, to rotate along its axis assisting 6 DOF motion of the robot and to keep the grasping force within 0-100gf and the rotation angle within 360°.

具有力感觉的手指系统在手术中的功能是夹持血管外膜或者是手术器械如缝合针等，进行夹持力的检测和调整；更换指端的手术器械，如手术剪或手术刀，以进行剪断和切割的操作；配合整个机器人六自由度运动的要求，指端器械绕自身轴线旋转；并且夹持力的调整范围是0~100gf，旋转的角度不超过360°。

The paper combined with the course of educational electroacoustic system experiment teaching innovation,discussed the objective of innovation,how to add comprehensive and designed experiments,how to apply modern educational technology instruments,and how to change teaching methods and examining ways.

通过结合&教育电声系统&实验教学改革的实际，对实验教学改革的目标和在改革中所进行的综合性、设计性实验的增加、现代教育技术手段的应用、教学方法和考核方式的变革进行初步探讨。

By the measurement of content of alkalinity degree and total iron, the product is indicated to be a kind of liquid with high alkalinity degree. The product shows the characteristic of electrolytical and is adapt to applying in wastewater treatment with fine physical property. It is without deposition in three months and mixed with water by unlimited scale.

2对产品的盐基度含量和总铁含量进行了测定，结果表明：实验室制备的产品是一种盐基度含量比较高的液体产品，在水溶液中呈现阳离子聚电解质的特性，产品的物理性质良好，三个月内无沉淀，与水可以以任何比例混合，适合于在废水处理中的应用。

Homology modeling of 3-D structure of two AChE from L.entomophila were constructed using H.sapiens(1p0i:A) native BuChE structure and Drosophila melanogaster(1d×4:A) native AChE structure as templates,respectively,by SWISS-MODEL.The catalytic triad were found and denoted in the 3-D structure of AChE from L. entomophila referring to T.californica.2.2 Gene cloning ofβ-actin and mRNA expression levels of two AChE genes from L. entomophilaBecause no reference gene has ever been used in Real Time PCR for L.entomophila in GeneBank,a fragment ofβ-actin gene was cloned from L.entomophila(GenBank Accession No.: FJ041117).It consists of 822 bp encoding a protein of 273 amino acids residues.

利用蛋白质结构同源建模工具，分别以人丁酰胆碱酯酶(1p0i：A)和果蝇乙酰胆碱酯酶(1d×4：A)的蛋白晶体结构为模板，对嗜虫书虱2个AChE的三维结构进行同源建模，并在三维结构中发现了AChE的酶解活性位点，证明嗜虫书虱体内也存在2个AChE基因。2.2嗜虫书虱β-actin基因克隆及乙酰胆碱酯酶基因mRNA表达水平研究目前关于嗜虫书虱的分子生物学研究较少，在GenBank中没有可用作内参基因的序列，因此本研究从嗜虫书虱体内克隆获得β—actin基因片段(GenBank登录号：FJ041117)，该片段长度为822 bp，编码273个氨基酸残基，同源性比对分析表明该片段与其它昆虫的β—actin基因具有很高的同源性。

Based on the analysis of the network, automatization and competition of the auction, the concept of overtime and history information are introduced from the point of the view of the organizer and the competitor, aimed at it can't response the trade of auction effectively; and while existing incomplete information, the efficiency of the auction is low without consider the history information. This paper put forward a MAS flow frame and a negotiated algorithm that make the responsers of the auction participate in the negotiation honestly and actively. Both the efficiency and hyalinization among the responsers have been enhanced.

文章在分析拍卖方式网络化、自动化、竞争化的基础上，从拍卖请求方和能力竞争方的角度，引入拍卖过程中的超时思想和Agent合作的历史信息对拍卖任务得不到及时的处理和由于拍卖方和竞买方的信息不对称，没有考虑历史信息的情况下成交效率太低进行分析、研究，提出一种多Agent拍卖流程框架和协商算法，从而使得在拍卖中各响应者都以积极并诚实的姿态参与协商，以致大大地提高了协商效率，且增加了响应者之间的透明性。

In this paper, initiator is dissolved in 1-bromopropane which is solvent. Then the propene and hydrogen bromide that can be dissolved in 1-bromopropane are inlet in l-bromopropane when initiator is decomposing. The reaction occurs in fluid phase and high-purity 1-bromopropane is synthesized by one step method. In this paper, the material HBr is synthesized with NaBr and sulfuric acid at the presence of hydrobromic acid.

本论文以1-溴丙烷为溶剂，将引发剂溶于其中，加热到引发剂开始分解时再通入丙烯和HBr，使二者溶解于1-溴丙烷中，在液相中进行反应，实现丙烯&一步法&合成高纯1-溴丙烷利用NaBr与硫酸在氢溴酸存在下反应制备HBr气体，以作为合成1-溴丙烷的原料。

In training the computer system provided sequential stimulation to three key muscles groups(iliacus, quadriceps, shank triceps), In 3 cases with different level of spinal cord injury, the clinical application and curative effects were observed with this system.

锻炼每周进行3次，每次踏车10min，锻炼过程中，电脑控制多通道电刺激器在不同象限内顺序刺激双下肢的骼肌、股四头肌、小腿三头肌来完成踏车运动。在锻炼中记录自行踏车时间，并观察血压、脉搏的动态变化。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。