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。
2
A definition of DNA curvature has been made. The transformation matrix involving the angular parameters relating successive base-pair steps has been used to investigate the DNA curvature.
给出DNA宏观弯曲的定义，使用联系碱基对梯阶间的变换矩阵计算宏观弯曲。
3
The structure system transformation has been implemented by successive extending beam and demolishing temporary support.