单位特性

There is a small action range in archery.Simple methods and analysis is inadequate,so the author,on the basis of testing the archery athletes in national team with the Qualisisy infrared photoelectric testing system,Footscan sole pressure testing system,Noraxon myoelectricity remote testing system, etc,analyzes comprehensively the action technique of the athletes in national team from the posture,body motion characteristics,body posture equilibrium and stability,distribution of centre sole pressure, myoelectricity characteristics,etc,with the methods of relative software and data statistics.The conclusions and the suggestions are as follows:Conclusion:Firstly,the communality of posture angle,muscle strength,the activation order of main muscle during raising the bow, raising the bow and the timing of the raising could be used as the evaluation index of technique action in archery;Secondly,the length of the time needed in the different periods couldn\'t be used as technique evaluation index since it has no relation with the result.But the time of raising and pulling back the row is relatively fixed,and the time has a positive relation with the archery achievement of the national team in China.Thirdly,the central index of the sole pressure could be used as the reference criterion of selecting athletes and forecasting achievement.During playing archery,the interrelation between the central index of the sole pressure and the achievement is different individually and in different periods.Fourthly,there is low stability of the archery athletes in the front and back direction during the action, caused by the athletes\' posture disequilibrium of dorsal abdominal muscle and non-professional sport shoes..Fifthly,kinematics and electromyography shows that the people on archery in China haven\'t taken the raising and pulling back the row seriously.

射箭的肢体动作幅度小，简单的手段和分析不能满足其需要，笔者结合各种运动生物力学仪器优点及射箭项目的特性，选用Qualisisy红外光点测试系统、Footscan足底压力测试系统、Noraxon肌电遥测系统等对国家队射箭队运动员进行多方位的测试，运用相关软件及数理统计方法，对运动员的射箭动作技术，从射箭动作的姿态构架、肢体运动特点，身体姿态平衡稳定性、足底压力中心分布、肌电特性等进行全面分析，结论及建议如下：结论：第一，姿态角、肌肉用力激活程度、举弓阶段主要用力肌肉激活顺序、举弓、开弓时间等的一致性可作为射箭技术动作评价指标；第二，各动作阶段所用时间的长短不能作为技术评价指标，但举、开弓的时间相对较固定，开举弓时间比与中国国家队射箭成绩正弱相关达到显著性；第三，闭眼状态下足底压力中心单位面积轨迹长与144支箭最好成绩正相关达到显著性，可作为身体素质、选材及成绩预测的参考依据；实射时身体平衡的足底压力中心指标与成绩的相关程度具有个体性差异、阶段性差异；第四，射箭运动员实射时身体在前后方向上的稳定性较差，这与运动员的站立姿态、腹背肌力量的不匹配以及射箭没有专业运动鞋有关；第五，运动学及肌电学都表明中国射箭训练对举弓、开弓阶段的重视不够，背部肌肉用力特征不明显，撒放技术合理性不高。

The study shows the BP neural network model of hydro-turbine for s pecial discharge and special torque can be used to describe its nonlinear charac teristic and ensure the continuity of derivative function of special discharge. The convergence for hammer calculating is improved.

水轮机单位流量和单位力矩特性的BP神经网络模型能真实地表达水轮机的非线性特性，且解决了插值法的导数不连续问题，从而改善了水击计算的收敛性，为用于工程计算和科学分析的水轮机特性表达开辟了新的途径。

It is possible to use a Darlington connection in place of the FET-bipolar combination in cases where the output current is high and the base current of the Darlington input would not cause a significant error.

本电路使用的 OP 必须对单位增益进行补偿。并且根据负载特性和输出级电路的特性可能需要额外的补偿。

The main findings were as follows: 1. The results revealed that the conjunction of agreement and inconsistency among family members was found in a family. The phenomenon showed that in " the sameness has the differentness" and between "the differentness has the sameness", and it is the special result of system measurement. 2. It proved the system theory including "one adding one are not two", existence of subsystems. 3. Every family member has different perception to the same dyad relationship, so the subject should use the units of whole family, including father, mother, and one child or more. 4. The same members of this family had different perception to different dyad relationship, so the content of instrument should include different dyad. 5. In regard to analyzable methods of family system, the variance is between family members, and it is not adaptation to using average method and variance method.

主要结果包括：第一研究姿现成员问同时具备「一效性」与「不一致性」的现象，此种「同中有异」、「异中有同」的特性，反映出系统圳量时的独特之处；第二，验证家庭系统中的不等加性、家庭整体性并不能成功的被验证，但验证次系统的存在、以及验证次系统之问具有关连性等系统理论；第三，在划量对象上，结果姿现不同成员间的差异的确存在，故进行家庭系统测量之测量单位应以「整个家庭」为单位，故划量对象应包括父、母、子三者甚至更多，所获得的资料亦更接近系统性也更加丰富；第四，不同成员对於不同次系统知觉之分化内涵不同，故必须将不同次系统分开利量；第五，在家庭系统分析方法上，不同成员问观点之差异性是确实存在的，而不适合使用「平均数法」与「差异数法」处理系统资料。

A new method relying on the Stroh formulism and the theory of the surface impedance tensor was developed to investigate the dynamic instability of interfacial slip waves.The concept of the surface impedance tensor was extended to the case where the wave speed is of a complex value,and the boundary conditions at the frictionally contacting interface were expressed by the surface impedance tensor.Then the boundary value problem was transformed to searching for zeroes of a complex polynomial in the unit circle...

基于Stroh公式和表面阻抗张量理论，提出了研究界面滑移波动态失稳问题的一种新的方法·该方法将表面阻抗张量概念推广到复波速域，并将摩擦接触界面上的边界条件以表面阻抗张量表示·最终将边值问题化归为求解一个复多项式在单位圆内的根·以弹性半空间与刚体平面相对稳态摩擦滑移为例进行了详细的分析，导出了一个4次复特征方程并讨论了方程在单位圆内解的特性，给出了滑移界面波失稳条件的显式解析表达式

Information is stored in mass storage systems in large units called files. A typical file may consist of a complete text document, a photograph, a program, or a collection of data about the employees in a company. The physical properties of mass storage devices dictate that these files be stored and retrieved in multiple byte units. For example, each sector on a magnetic disk must be manipulated as one continuous string of bits. A block of data conforming to the physical characteristics of a storage device is called a physical record. Thus , a file stored in mass storage will typically consist of many physical records.

在大容量存储系统中，信息是以称为文件的大的单位储存的，一个典型的文件可以是一个全文本的资料，一张照片或一组关于公司员工的数据，大容量存储系统的物理特性表明，这些文件是按照许多字节为单位存储的检索的，例如，磁盘上每个扇区必须作为一个连续的二进制位串进行操作，符合存储系统物理特性的数据块称为物理记录，因此存放在大容量存储系统中的文件通常包含许多物理记录。

To investigate the relationship of subunit of F18 fimbrial adhesin with the adhesion effect,adhesive inhibition tests were performed using antibodies specific for the subunits FedA,FedE and FedF.

利用抗大肠埃希氏菌F18菌毛主要结构亚单位FedA特异抗体和次要结构亚单位FedE、FedF特异抗体，研究了F18菌毛与小肠上皮细胞的黏附特性。

Result Richards Model and Monodic Quadratic Equation could properly describe grain dry matter growing process and the change process of grain filling rate with days after anthesis. There was big difference in average grain filling rate, maximum grain filling rate under different planting density. Average grain filling rate 1.26 mg/ and maximum grain filling rate 2.44 mg/ of T7 were the quickest, and the average grain filling rate 0.94 mg/ and maximum grain filling rate 1.99 mg/ of T12 were the slowest, and the maximum difference percentage of the average grain filling rate and maximum grain filling rate among different density were 33.98%, 22.61%. There was significant correlation between average grain filling rate, maximum grain filling rate, grain filling active duration, rapid increasing stage and thousand grain weight, and the correlation coefficients were 0.628*, 0.630*, 0.849**, 0.739**. Active grain filling duration contributed mostly to TGW.

结果不同密度处理间千粒重、单位面积穗数、穗粒数、单株穗数、单位面积籽粒产量均存在显著差异；不同密度处理冬小麦的籽粒灌浆均符合慢－快－慢的&S&型生长特性，用Richards模型能很好地模拟冬小麦籽粒增重过程，用一元二次抛物线方程能较好地模拟冬小麦灌浆速率随花后时间变化过程；不同密度处理间平均灌浆速率、最大灌浆速率有较大差异，最大差异率分别为33.98%、22.61%，T7的平均灌浆速率1.26mg/及最大灌浆速率2.44mg/均最大，T12的平均灌浆速率0.94mg/及最大灌浆速率1.99mg/均最小；平均灌浆速率、最大灌浆速率、灌浆活跃期、灌浆快增期与千粒重显著或极显著正相关，相关系数分别为0.628*、0.630*、0.849**、0.739**；通径分析表明，灌浆活跃期对千粒重的贡献最大。

XIANG Yu SHEN Zuo-Rui HUANG Da-ZHuang,LI-Ruijun作者单位: Department of Entomology, Chinese Agriculture University论文摘要:,,,(1., Beijing, 100094; 2., Baoding, 071000 ) Abstract: Based on both molecular detection of Wolbachia wsp gene and biological character observation, relationship between thelytokous character of Trichogramma cacoeciae and its symboint Wolbachia has been studied under the condition of 30℃ of 10 generations.

论文摘要：在30℃的条件下，连续饲养卷叶蛾赤眼蜂10代，观察每代蜂的生物学特性，并进行 Wolbachia的wsp基因的分子检测，从分子生物学和传统生物学的双重角度研究卷叶蛾赤眼蜂产雌孤雌生殖行为与其体内共生菌Wolbachia的关系。

Information is stored in mass storage systems in large units called files. A typical file may consist of a complete text document, a photograph, a program, or a collection of data about the employees in a company. The physical properties of mass storage devices dictate that these files be stored and retrieved in multiple byte units. For example, each sector on a magnetic disk must be manipulated as one continuous string of bits. A block of data conforming to the physical characteristics of a storage device is called a physical record. Thus , a file stored in mass storage will typically consist of many physical records.

在大容积存储系统中，信息是以称为文件的大的单位存储的，一个典型的文件可以是一个全文本的资料，一张照片或一组关于公司员工的数值，大容积存储系统的物理特性表明，这些个文件是按照许多字节为单位存储的检索的，例如，磁盘上每个扇区必需作为一个持续的二进制位串进行操作，符合存储系统物理特性的数值块称为物理记录，因此储存安放在大容积存储系统中的文件通常包罗许多物理记录。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。