实验研究

Aiming at hydronic road snow-melting systems based on renewable energy including solar and geothermal energy, the behavior of heat and mass transfer during the snow-melting process is studied theoretically and experimentally in the present work, which can be taken as references for system design and large-scale applications in future.

本文以基于太阳能、地热能等可再生热源的流体加热道路融雪系统为研究对象，主要针对融雪过程中的有关传热传质过程展开了一系列基础理论与实验研究，为进一步优化设计与规模化应用提供了指导依据。

At the beginning of the thesis, the structure of usually used radome is introduced and the parameters of electromagntic characters are described in Chapter Ⅰ; the different methods for analysis of the electromagnetic characters of radome are summarized in Chapter Ⅱ; the propagation of 3-D beam in free space is conducted in Chapter Ⅲ; then in Chapter Ⅳ, the 3-D Complex Ray Theory are analyzed and the characters of transmitted field of sum and difference beams through radome are studied, and the relative formulations of calculation are rekened; at last the electromagnetic characters of the ellipsoidal sandwich radome and the plane single-layered radome are discussed, and suggestions for optimization of electromagnetic properties of radome are given.

本文第一章介绍了常用雷达罩的结构和描述雷达罩电磁特性的参量，第二章概述了目前分析雷达罩电磁特性所采用的各种方法，第三章分析了三维波束在自由空间传输特性，第四章研究了三维复射线理论，并应用它分析了单脉冲和差波束穿过雷达罩透射场的特性，导出了有关计算公式，在第五章，通过大量的数值计算和实验研究，讨论了椭球形三层夹心状实用雷达罩和单层介质平板模拟雷达罩的电磁特性，并提供了雷达罩电气特性优化的建议。

Meanwhile, self-energy research was supported by experimental study.

与此同时，自我能量的研究也得到了实验研究的支持。

This thesis has chosen the H_2SO_4 anode oxidation. From degreasing, alkaline cleaning, neutralization, the effect of surface before hand treatment on the quality of surface anodizing treatment is discussed. From electrolyte concentration, electrolyte temperature, voltage, timing, additive, the effect of anodizing oxidation on the quality of surface treatment are discussed, From hole sealing liquid composition pH, value, timing, the effect of hole sealing on the quality of surface oxidation treatment are examined.

对氧化的各个工序进行了较详细的分析，通过脱脂、碱蚀、中和等表面预处理进行了详细的研究讨论，确定了三个预处理工序的最佳工艺控制参数；从阳极氧化机理着手，对阳极氧化电解液浓度，氧化电解液温度，氧化时间、电流密度，氧化电压，添加剂等对氧化质量的影响因素进行了分析；对化学氧化工艺进行了传统的铬酸盐-磷酸盐氧化法正交实验研究，讨论了各个氧化液成分对氧化膜性能的影响。

In the light of geological characteristics of Dongfang 1-1 Gas Field, mass indoor experiments are conducted and studied. Sand grain level are analyzed, the sand control parameters and screen pipe and blind pipe combination proportion is optimized. On this basis, the most suitable horizontal screen pipe sand control method for this gas field is found. Through the medium of DONGFANG 1—1 gas field field conduct proven, the sand control technology are completely run up to DONGFANG 1-1 gas field completion require.

针对东方1—1气田的具体地质特征，通过大量的室内实验研究，对地层砂粒度进行了分析和分选性研究，对防砂参数和筛管与盲管的组合比例进行了优化，从而找出最适合该气田的水平井筛管防砂完井方法，通过东方1—1气田的现场实施证明，该防砂技术完全达到了东方1-1气田完井的要求。

The microsturcture characteristics of M2 cast-strip were studied with such experimental methods as metallographic analysis, SEM, XRD and TEM[0]. The effect of sub-rapid solidification on the size, type and distribution of eutectic carbides in M2 cast-strip was analyzed. The effect of heat treatment temperature and its holding time on the eutectic carbides in M2 cast-strip was explored. The eveolution of metastable phase of M2C eutectic carbide during the heat treatment period and the decomposition dynamics concerned were researched. The M2 cast-strips were rolled into thin strips and the effect of deformation ratio on carbides in M2 cast-strip was examined. Then these thin strips were comparied with those that were produced by conventional technology on carbide, hardness, red-hardness and bend strength. At last the rolled M2 cast-strips were made into saw blades and their cutting performance was experimented on in tools factories and then compared with that of similar products produced by conventional technology.

采用常规金相、扫描电镜、X射线衍射及透射电镜等实验研究了M2高速钢铸带的凝固组织特征，分析了亚快速凝固对铸带中的共晶碳化物的析出类型和尺寸以及分布的影响；探索了后续热处理温度和保温时间对铸带碳化物组织的影响规律，分析了铸带中的亚稳相M2C共晶碳化物在热处理过程中的分解情况以及分解动力学；将铸带热轧成薄带，研究了压下率对铸带碳化物组织的影响，并将热轧薄带与常规工艺生产的相同规格的M2高速钢薄带在碳化物组织、硬度与红硬性以及抗弯性能等方面进行了对比；将热轧薄带加工成机用锯条后在工具厂进行了锯切性能试验，并与常规工艺生产的同类产品进行了使用性能对比。

Experimental Research of laser-produced high energy X-ray source is one of the important parts of ICF.

激光驱动X射线源的实验研究是惯性约束聚变(Inertial Confinement Fusion简称ICF)相关物理研究的重要内容之一。

The study on the newly developing membrane separation technology - vacuum membrane distillation is carried out with experimental and theoretical research work in this paper.

本论文对新型的膜分离技术—减压膜蒸馏技术进行了全面的实验研究和理论研究。

In recent years, with the development of the tech some commercialised electronic controlled system have been offered to sale.

近几年来，随着柴油机电控技术的发展，国外已相继推出了一些商品化的柴油机电控系统，我国在这一领域起步较晚，相对水平较低，处于实验研究阶段，急需进行深入的研究和开发以缩短与发达国家的差距。

This method is used to obtain the parameter of dielectrics,but the background current existing in test influences the results.

过去的研究大多停留在宏观定性的实验研究，尚缺少微观定量的分析。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新