自从二道生理记录仪替代记纹鼓后，给病理生理学，生理学和药理学等许多学科的实验教学带来了极大的便利，而且大大提高了实验结果的准确度。但二道仪仅能同时描记两项指标“’，在做休克、心衰等实验时需观测多项指标，除了描记呼吸和血压外，没有测定尿量的空余描记位置。既 Since the two physiological recorders replaced the tachograph drums, it has brought great convenience to experimental teaching in many disciplines such as pathophysiology, physiology and pharmacology, and has greatly improved the accuracy of the experimental results. However, the two-channel instrument can only trace two indicators at the same time, and many indicators need to be observed when performing experiments such as shock and heart failure. In addition to drawing respiratory and blood pressure, there is no measurement of the position of the urine output.