By the essential control of the initial stage of - material growth , the high - quality crystal films can be obtained . by using mocvd technology , studies of some kinds of methods such as hydrogen - terminated , nitridation , plasma - assisted , growth of two stages and sputtering buffer layers have been conducted . by measuring of xrd , pl , sem and tem , and analysis of spectra of xrd , raman scatting , oa , and pl at different temperatures , we observed that the crystal quality has been improved markedly 本文利用mocvd技术，采用各种对si衬底处理的方法，如氢终止法、氮化法、等离子体轰击方法、两步生长法、溅射缓冲层法等进行了试验与研究，通过x射线衍射技术( xrd ) 、光致发光技术( pl ) 、扫描电子显微术( sem ) 、透射电子显微术( tem )等检测，并对其x射线衍射光谱、拉谱光谱、吸收光谱及不同温度下的光致发光光谱分析，发现外延晶体的生长质量得到了明显提高。
( 6 ) the treatment of wastewater containing triazophos using uv , uv - h2o2 , uv - fenton ( fe2 + ) , uv - fenton ( fe3 + ) were tested under the conditions with and without aerating air . the result showed that photooxidation can improve the biodegradability of this type of water ; the removal rate of cod improved markedly by aerating air . both uv - fenton ( fe2 + ) and uv - fenton ( fe3 + ) the removal rate of cod was reached above 80 % after treating 120 minutes , distinctly higher than uvand uv / h2o2 ( 6 )在直接光氧化和向水体充入空气的光氧化条件下进行了uv 、 uv - h _ 2o _ 2 、 uv - fenton 、 uv -类fenton四种工艺处理含三唑磷废水的实验研究，结果表明：光氧化处理改善了含三唑磷水样的可生化性；曝气使处理效果显著提高； uv - fenton 、 uv -类fenton两种工艺的处理效果较好，处理效果达到80左右，远高于另外两种工艺的处理效果。
By analyzing the technology parameters of pipe mold , develops the application program of computing technology parameters of pipe mold , simplifies the computing course , improves markedly the manufacturing effective of pipe ; by elaborating the standardized series parts of mold and analyzing the measures of dimension driving in pro / e , develops the applicant program which reform the ways of dimension driving about series parts , making it fit to designing customs and demands . it can improve the design effective of mold standardized series parts . by researching the subjunctive assemble technology , develops the simulation parts of mold assemble 通过对三维弯管芯模的设计和生产工艺进行分析，开发出了芯模的工艺参数计算分析模块，简化了工艺参数的计算步骤，显著提高了生产效率；对模具标准系列零件进行概述和分析，通过对pro e软件中的系列零件的尺寸驱动方法进行分析，丌发出了改善系列零件尺寸驱动方法的功能模块，使其更符合人们设计的习惯和要求，以提高标准系列零件的设计效率；对虚拟装配技术进行研究分析，并结合具体模具的装配，开发出了模具装配的虚拟仿真模块，并仿真其中的机构零件运动，方便进行干涉检验，使装配结构更直观明了。
