descriptive transformation的意思|示意

Z. S. Harris, the famous American Descriptive Linguist, divides his linguistic study into three stages:"Structure-analysing", "Transformation-analysing"and "Operator Grammar".

美国著名的描写主义语言学家哈利斯，其语言学研究包括三个阶段：结构分析、转换分析和算子语法。

In the transformation of descriptive geometry, no matter the method of change plane or revolve, the oblique line can be changed to a vertical line in two successive transformations.

在画法几何投影变换中，不论用换面法或旋转法，一般位置直线均需两次变换才能变成投影面垂直线。