本文讨论的是基于Unet框架，Relay引起的结构变化。在UNet框架下，Relay主要引起三个大模块的变化：网元、覆盖、容量仿真。另外，Relay对于工程框架也有少量影响，但仅限于添加新的图标等-This discussion is based on Unet fr a mework, Relay induced structural changes. In UNet fr a mework, Relay module mainly caused by three big changes: N