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

加到每光电增管电极上电压决定PMT计，并由每管子型来确定。

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

皮安计在最后增管电极处读取电流，此电流等阳极电流减去流过前增管电极电流。