英语语法分析

The acis rain in china is due to the local pollution of sulfur.

我国酸雨主要是局地性硫污染所造成的。

ACIS provides a number of function library and abundant functionality of 3-d geometry modeling.

ACIS提供了大量的函数库，具有丰富的几何造型功能。

With the development of ACIS platform, the importance of its model file has become more and more obvious.

随着ACIS环境应用的不断扩展，其模型文件的重要性也越来越突出。