For our laboratory is changing toward industrialization , a lot of work on conventional ingaas / gaas / algaas quantum well laser has been done . how the parameters , such as threshold current density , slope efficiency , fwhm and spectrum width , are influenced and how much the influence is , are discussed by the numbers . the effective means how to improve a certain performance parameter are purposed too 由于本实验室正处于由试验研究向产业化迈进的阶段，针对常规ingaas / gaas / algaas量子阱激光器做了很多工作，文中系统论述了常规量子阱激光器的各项性能参数?阈值电流密度、斜率效率、远场发散角、光谱线宽等的影响因素及改进的有效办法，并针对激光器p ? i线性度不好、远场发散角出现多瓣的现象，通过理论分析找出原因所在并进行了改进，有效解决了以上问题。
The second part analyzes the status quo and problems in the management of car in china . and try to find out the reason that car being quite low level in our banks , indirect financial system and the government behavior are the macro - reasons ; micro - reason is the weak profit ability of these banks 第二部分首先介绍了我国商业银行资本充足率的现状,随后对我国商业银行资本充足率低的问题进行了分析,并找出原因:以间接金融为主的融资体系和政府行为是造成我国商业银行资本充足率低的宏观原因;我国商业银行盈利能力较低是其微观原因。
