Specifies that text is to be rotated 90 degrees 指定将文本旋转90度。
Rotate 90 degrees 旋转90度
If a barge were rotated 90 degrees it still would present the same profile but would generate less beneficial hydrostatic forces 如果将驳船倾转90度,其仍然呈现出一样的图形,但是会产生一些有利的流体力学的力。
The following illustration shows an affine transformation rotate 90 degrees ; translate 3 units in the x direction , 4 units in the y direction expressed as multiplication by a single 33 matrix 下图演示了表示为与单个33矩阵相乘的仿射变换(旋转90度;在x方向上平移3个单位,在y方向上平移4个单位) 。