本机以低功耗、便携式为主要特点，以光频检测方法为核心，结合高精度传感器，通过键盘和LCD显示屏进行人机交互，提供了一种简单、可靠、精度较高的甲醛溶液浓度检测方法-The machine takes the low power consumption and the portable as the main features, and takes the optical frequency detection method as the core, combined with the high p