SDL控件组也是不错的，可以做化学分子结构图；信号FFT分析；画科学工程图等等。 和ABAKUS一样，其源码难以得到，极其困难！现在你可以拥有源码了-SDL is also a good control group, they can do chemical molecular structure diagram FFT signal analysis drawing of science engineering drawings and so on. And ABAKUS as i