什么是 bipolar?Relating to or having two poles or charges.Relating to a device capable of using two polarizations, such as a transistor that uses positive and negative charge carriers.Relating to or involving both of the earth's polar regions.Having two opposite or contradictory ideas or natures: the bipolar world of the postwar period. Biology Having two poles or opposite extremities: a bipolar neuron. Psychology Relating to a major affective disorder that is characterized by episodes of mania and depression.