The positioning method, avoid approaching the one-way transmission system from the reverse clearance positioning error.

采用单向趋近定位方法，避免传动系统反向间隙而产生的定位误差。

youdao

The existing control system of LED display transmits data with unidirectional open circuit way, but if any one of transmission paths was on the event of failure, LED display would not show correctly.

现有LED显示屏控制系统以单向开路的方式进行数据传输，在任意一个传输通路上发生故障时，LED显示屏都不能正确显示。

youdao