If this is the interface pass, output all the class instance variables.
如果这是接口部分，那么输出所有类实例的变量。
This module has a RS-422 interface and two standard PAL TV video output channel.
该模块具有RS-422总线接口与两路PAL制式复合视频输出端。
This module has a RS-422 interface and two standard PAL TV video output channel.
该模块具有RS-422总线接口与两路PAL制式复合视频输出端。
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