| 1. | The difference between a direct and an alternating current is that a direct current always flows in one direction .
直流电和交流电的区别在于直流电总是向一个方向流动。
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| 2. | System tests for high - voltage direct current installations
高压直流装置的系统试验
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| 3. | Terminology for high - voltage direct current transmission
高压直流电输送术语
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| 4. | Direct current amplifiers - characteristics and test methods
直流放大器特性和测试方法
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| 5. | Terminology for high - voltage direct current transmission
高压直流电传输术语
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| 6. | The measurement uncertainty of direct current offset
直流偏移的测量不确定度
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| 7. | Direct current 1ma reference voltage kv is no less than 25
直流1ma参考电压kv不小于25
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| 8. | Direct current amplifiers ; characteristics and test methods
直流放大器.特性和试验方法
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| 9. | General specification for low voltage direct current power supply
低压直流电源通用规范
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| 10. | Direct current 1ma reference voltage kv is no less than 26 . 0
直流1ma参考电压kv不小于25
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