针对其不足提出几种优化改进方案，并通过计算机数值仿真计算对比各方案改进效果。
Several optimization schemes of improvement in view of its shortcomings are put forward, and comparisons of the schemes are made by computational numerical simulation method.
对比各方案，推荐第一方案为较优方案，文章最后对水源地开采后的水环境问题及水资源保护措施进行了论述。
Comparing these plans, the writer puts the best is the 1st plan and expounds the water environmental issues after exploiting and protective measure of water resource at last.
本文介绍了几种头盔式显示器的光学设计方案，并从提高系统的分辨率、对比度，重量等各方面作了比较。
Several optical design schemes of helmet display are introduced and compared in resolution, contrast and weihgt of system.
应用推荐