求翻译：即在被测介质的压力作用下，迫使两弹簧管之末端各自产生相应的位移，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红，黑指针将两个被测值分别在度盘上指示出来。是什么意思？

That is tested under pressure of the media, forcing the displacement of their produce at the end of the two spring tube, with the help of lever gear drive mechanism of transmission and amplification from fixed to the gear axis of red, black pointer two measured values are indicated on the dial.