减去的

This relieved us of part of our luggage.

这给我们减去一部分行李。

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

皮安计在最后一个倍增管电极处读取电流，此电流等于极电流减去流过前一个倍增管电极电流。