費斯托光電式傳感器結構原理，193965 GR-QS-3 圖片

p1Src=//y2.yzimgs.com/uploads/461511/2018921-94954157.jpg?watermark/2/text/5LiK5rW35Lm-5ouT6LS45piT5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/500/fill/I0E3QTlBOA==/gravity/SouthEast"

aa