As I say in just about every design article I write, centeralignment should be a last resort, not a first.
正如我在所有幻灯片设计的文章里所说的，居中对齐应该是你的最后选择而非首选。
2
Output transformer has 2-dimensional regulating function, which makes centeralignment of inductor and workpiece be easy.
输出变压器具有二维调节功能，使感应器与工件对中心极为方便。
3
It tends to be the weakest text alignment that you can choose, having a hard edge increases readability considerably (notice that book pages aren't center-aligned).