求翻译：生料粉磨系统按熟料烧成工艺的不同，可以分为干法生料粉磨和湿法生料粉磨两种形式，湿法粉磨已被国家限制，现在水泥生产都采用干法粉磨系统。干法生料粉磨系统主要有以下几种形式：是什么意思？

The firing process of different raw material grinding system according to the clinker, the two forms can be divided into the dry raw material grinding and wet raw material grinding, wet grinding has been restricted by the State, and cement production are now using dry grinding system. The dry raw ma