illegal transition
非法的过渡
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Practice has proved that this method is feasible, easy to extend the number of menu and can avoid the emergence of non illegal states, and the menu transition is very fast, stable and reliable.
实际应用表明，这种方法易于扩展菜单数量，避免了非法状态的出现，菜单转换迅速、稳定可靠。
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应用推荐
模块上移
模块下移
不移动