This paper presents an approach, using shape grammars, on the basis of shape rules to design pictures, which is a preliminarypractice of solving the problems artificially.
本文提出的用形状语法，按照形状规则，设计生成图形的方法，是智能地解决这一问题的初步实践。
2
The thorough analysis and preliminarypractice of it proves that, it can be used as the reference material for instruction classes and the teaching material for exercise classes.
深入的分析与初步的实践证明，它可作为教学课的素材与活动课的教材。
3
This paper introduces nanofiltration for nickel plating rinse water treatment in small-scale test, industrial practice and preliminary purification of nickel sulfate, respectively.