以下为句子列表：
英文: In other words, collector current mimics, or mirrors, diode current.
中文: 换句话说，集电极电流模仿或镜像了二极管电流。
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英文: Remember, the transistor's collector current is almost equal to its emitter current, as the α ratio of a typical transistor is almost unity (1).
中文: 不要忘了，通常典型晶体管的系数α几乎是1，因此晶体管集电极电流与发射极电流也几乎是相等的。
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英文: Therefore, if we have a way of holding emitter current constant through a transistor, the transistor will work to regulate collector current at a constant value.
中文: 于是，只要我们能让晶体管的发射极电流保持恒定，它就能保持发射极电流为恒定值。
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英文: Well, the α ratio works similarly: if emitter current is held constant, collector current will remain at a stable, regulated value so long as the transistor has enough collector-to-emitter voltage drop to maintain it in its active mode.
中文: 系数α的作用与之类似：如果发射极电流保持恒定，只要集电极－发射极电压足以使其保持在放大区，集电极电流也将稳定保持。
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