求翻译：仪表的作用原理是基于弹性元件（测量系统中的弹簧管）变形。在被测介质的压力作用下，迫使弹簧管之末端产生相应的弹性变形，借助于拉杆经齿轮传动机构的传动和放大，由固定于齿轮轴上的指针逐将被测值在度盘上指示出来。是什么意思？

Action principle is based on the elastic component of the instrument (measurement system of spring tube) deformation. In measured media under pressure, force the elastic deformation of the spring produce at the end of the tube, with the help of lever-gear transmission and amplification of transmission, from fixed to the gear axis pointer on the line by the measured value is indicated on the dial.