The picoammeter reads the current at the last dynode, which is equal to the anode current minus the current flowing to the previous dynode.

皮安计在最后电极处读取电流，此电流于阳极电流减去流过前电极的电流。

The voltages that should be applied to each dynode are a function of PMT design and are specified for each tube type.

加到每光电电极上的电压决定于PMT的设计，并由每子的型号来确定。