The paper introduces the design and application of a plant detector which is installed on an electrostatic and target spraying machinery for cotton.
介绍了安装在棉花静电对靶喷雾机上的植株探测器的设计和应用。探测器采用光电探测技术，实现对植株有无的探测。
The basic measuring principle of flame detector is stated, as well as its application in thermal power plant. The image flame detector is discussed.
文中阐述了火焰检测器的基本原理及其在火电厂的应用，还介绍了火焰图像检测器。
应用推荐