"having two poles," from bi- + polar; 1810 with figurative sense of "of double aspect;" 1859 with reference to physiology. Psychiatric use in reference to what had been called manic-depressive psychosis is said to have begun 1957 with German psychiatrist Karl Leonhard. The term became popular early 1990s. Bipolar disorder was in DSM III (1980).
实用例句
1. In the 1960 s the IC market was broadly on bipolar transistors.
六十年代集成电路市场主要为双极型晶体管.
来自辞典例句
2. Perfectly normal bipolar embryoids are formed.
形成完全正常的两极胚状体.
来自辞典例句
3. Because of their simplicity, bipolar lead systems were the first to be used in clinical electrocardiography.
因为它们简单, 双极导联最先用于临床心电图学.
来自辞典例句
4. Two specialized epidermal cells and a bipolar neuron are associated with each sensillum.
一个感器联结着两个特化的真皮细胞和一个双极神经元.
来自辞典例句
5. It is possible to drive unipolar stepper motors with bipolar drivers.
