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- negative half period [电] 负半周
- Converts the negative half wave of an alternating current into a positive half wave. 把负极半波交流电转变成正极半波交流电。
- AC square-wave arc welding-its positive and negative half perimeter width can be adjusted and selected the best value SP, It can weld the alloy and alum etc in high quality. 交流方波氩弧焊,其正负半周宽度可调,可选择最佳SP比值,可高质量焊接铝合金、铝。
- Resistors R1 and R2 limit the current, and diode D1 protects the optoisolator from reverse-polarity voltages during the negative half of the line cycle. 在线循环的负半周期,电阻R1和R2限流,二极管D1保护光绝缘体远离负极性电压。
- AC squarewave arc weldingits positive and negative half perimeter width can be adjusted and selected the best value SP, It can weld the alloy and alum etc in high quality . 交流方波氩弧焊,其正负半周宽度可调,可选择最佳SP比值,可高质量焊接铝合金、铝。
- About from 2 0 century 70 time second half period begin an international market to begin to increase to pily demand, world cotton output and consumption all continue to increase. 大约从 2 0世纪 70年代后半期开始国际市场对棉花需求量开始增加 ,世界棉花生产量和消费量均继续增加。
- Introductive 20 centuries 80 time second half period later, the industrialization of Thailand had striking progress, subsequently, thailand society also happened very big fluctuant. 前 言 20世纪80年代后半期以后,泰国的产业化有了显著的进展,随之,泰国社会也发生了很大的变动。
- development policy in later half period 中后期开发对策
- the first half period of 20th century 20世纪上半叶
- the first half period of the Qing Dynasty 清代前期
- I apportioned half the property to each of them. 我把财产的一半分配给他们各人。
- The answer to my request was in the negative. 对我的请求的答复是否定的。
- She reckoned she had cut her cost by half. 她估计她减少了一半的费用。
- I worried half the night and have a fitful sleep. 我半个晚上都一直在担心,故而时醒时睡。
- His answer to my request was a negative. 我的请求遭到了他的拒绝。
- The tests for hepatitis were negative. 肝炎检查结果是阴性。
- Their criticism was not negative. 他们的批评并不是负面的。
- Controlling chaos using half period delay-nonlinear feedback 半周期延迟-非线性反馈控制混沌
- Do a blow-up of this corner of the negative. (对某事的)详尽的报道。
- He can fling off a poem in half an hour. 他可以在半小时之内草就一首诗。