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This article have a research on its hydraulic characteristic during high head above the weir,huge discharge in its different contraction ratio of generator through theory analysis and experimental comparison.

本文采用理论分析和试验比较的方法就该种消能工的起旋器收缩断面大小发生系列变化情况下，其在高水头，大泄量应用时所产生的一些水力特性变化进行探讨和研究。

The research contents include: slip distribution rules; slip effect on deflection in service stage; the impact of the interface friction, the paper fitting calculation formulae of cross section flexural Stiffness break subtract modulus, on the base of experimental study and ANSYS FE result, in addition to, present some significative advice for practical design.

本文在试验数据和有限元分析的基础上回归得出了组合梁截面抗弯刚度折减公式，并为实际设计提出了几点参考建议。

In order to study the intake air flow characteristics in four-valve diesel engines, in this dissertation hot-wire anemometer and PIV twodimension instantaneous measuring technique are used. Extensive experimental study on two intake valve exit flow fields and longitudinal section flow field in cylinder are performed for different type of diesel engines. Great researching progress have been made on the interaction between two intake ports, and the formation process of in-cylinder swirl and flow field structure of cross and longitudinal section for four valve diesel engines. These results are presented in China for the first time and without such kind of research work reported abroad as detailed and deepgoing as this dissertation. The author designs and makes a set of hot wire measuring velocity device to measure the velocity distribution around the intake valve annulus and the cross section flow field in cylinder.

为了研究四气门柴油机进气过程中气体流动的变化规律，本文利用热线测速和PIV二维瞬态测速技术，对四气门柴油机两进气门出口全圆周流速场和缸内横、纵剖面的气体流动流场进行了大量的试验研究，在四气门柴油机两进气道之间相互影响的变化规律，缸内涡流的形成过程及缸内横、纵剖面流场结构等方面取得了重大的研究进展，这一研究工作在国内尚属首次，在国外也未见有如此全面、深入的研究报道。

In the paper, the resistance heated and continuous facility is adopted to finish scramjet combustor experiment research on hydrogen-fueled and ethylene-fueled ignition and combustion at different equivalence ratio. The continuous clean airflow of flow ratio 0.73kg/s, total temperature Tt=1000K, Mach number M=2.0, total pressure Pt=0.8MPa is available to the inlet of direct-connected experimental model.

本文采用电阻加热的连续式实验设备，在燃烧室进口气流为高温纯净空气、Ma数M=2、总温Tt=1000K，总压Pt=0.8MPa条件下，进行了不同当量油气比的氢和乙烯燃料的超音速燃烧室直连式实验。

We collected and experimental analyzed the used oil samples of different running intervals of the field drain test as well as its engine condition, and it provided practical reference and statistics data for the SRAM research.

通过对45辆轿车的野外行车试验研究，收集和试验分析了各行车里程的废油油样和相对应的车况，为本简捷方法研究提供了最实际的参照对象和统计数据。

The research aimed to provide experimental references for the study of biotoxins like aflatoxin.

［目的］为黄曲霉毒素类生物毒素研究提供试验参考。

However, most research has been focused on the Allee effects of local populations and both theoretical and experimental studies on Allee-like effects at the metapopulation level remain much too limited.

然而，目前的研究主要集中在局域种群水平上，关于集合种群水平上似Allee效应对生态学系统的影响，不论是理论还是实验研究都十分缺乏。

By studying the actuality of experimental and research, the advantages of preparating boron and metal borides powder with molten salt electrolysis are much easier, less expensive and environmentally friendly and high purity of products.

结合国内外实验与研究的现状，分析认为，熔盐电解法制备与生产单质硼粉及金属硼化物的优点是环境友好、反应条件容易控制、产品纯度高，是很有前途的方法。

The research in this work offers valuable information and an experimental basis for application of these catalysts.

因此，本工作为该类催化剂实用化提供了有价值的信息和依据。

Therefore, it is suggested through present research that the chamfered testpiece is used and larger initial width of cut is adopted during chatter test in order that the experimental results would indicate the real dynamic behavior of machining system.

实验证明了初始切宽和试件倒角对稳定性阈限的影响，揭示出至今仍为国际上普遍采用的变切宽切削法的重要误差，为提高测量数据的一致性和完善机床动特性试验规范提供了理论和事实依据。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。