求翻译成英文

以污水处理厂的格栅处理工艺为研究背景，依据污水处理厂的进水参数及格栅设计原理，针对某污水处理厂的格栅进行了结构设计和参数计算。同时利用CAD软件绘制出了格栅的平面结构图。
Physical design and parameter calculation were, based on inflow parameters and screen design principles for sewage plant(插入语), made for XX sewage plant with screen processing in sewage disposal plant as research background. Besides, CAD software was applied for drawing of plane structure (chart可不要) of screen.

供参

In the sewage treatment plant the grille treatment process as the research background, according to the sewage treatment plant influent parameters and grille design principle, aiming at a sewage treatment plant of grid structure design and calculation of the parameters. While using CAD software to draw out the plane grid structure.

百度翻译告诉我的。
http://fanyi.baidu.com/

Taking the rack processing technique for sewage treatment works as the background, taking into account the sewerage inlet parameters and on the basis of principles for rack design, this study carried out the structural design and parameter computation of racks for a certain sewage treatment works and made the plane structural drawings of racks with AutoCAD.

In sewage treatment plant of the grille process as the research background, on the basis of the sewage treatment plant of water parameters and grille design principle, in view of the sewage treatment plant and the structure of the grille design and parameter calculation and use of CAD software draw out of the grating plane structure

太深奥了，什么叫格栅啊，不会。