请教光学专业的人，帮我看一看这句话如何翻译，谢谢！

a detector circuit receiving a reference current from said reference light detector and a sample current from said sample light detector, said detector circuit producing a difference voltage proportional to the difference between the reference current and the sample current by a current mode subtraction at a summing point having feedback to balance said reference current and said sample current to produce a difference current that is then converted to the difference voltage, said detector circuit simultaneously producing the difference voltage and at least one of a voltage proportional to said reference current and a voltage proportional to said sample current.

一探测电路从参考光探测器中接收一参考电流并取样光探测器中接收一取样电流....

请问这一句said detector circuit producing a difference voltage proportional to the difference between the reference current and the sample current by a current mode subtraction at a summing point having feedback to balance said reference current and said sample current to produce a difference current that is then converted to the difference voltage是什么意思，多谢！

楼主还是把你的翻译和难点在哪里详细说明一下吧，以方便大家帮助你。这样大段文字让大家翻译，不合适。

一种从所述参考光检测器接受参考电流并且从所述样品光检测器接受样品电流的检测电路，通过在合成点减少电流模式，所述检测电路生成的差分电压与参考电流和样品电流之间的差分成比例，该检测电路具有反馈功能以便平衡所述参考电流和所述样品电流，从而产生出差分电流，该差分电流随后转变成差分电压，所述检测电路同时生成差分电压和至少一种与参考电流成比例的电压以及与所述样品电流成比例的电压。