For example, data event monitoring services perform the "sensor" function by detecting changes in the information sources and creating and publishing events.

例如，数据事件监视服务通过检测信息源中的更改并创建和发布事件，从而执行“传感器”功能。

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Detecting the weld line and its edge directly by visual sensor can achieve much useful information, which is very important in the research of weld line automatic tracking.

采用机器视觉直接观察可以获得很多关于熔池区及其边界的有益信息，对研究熔池形貌自动跟踪有十分重要的意义。

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