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关注:1
2013-05-23 12:21
求翻译:Alternating Current flows one way,then the other way,continually reversing direction.An AC voltage is continually changing between positive(+)and negative(-).The rate of changing direction is called the frequency of the AC and it is measured in hertz(HZ) which is the number of forwards-backwards cycles per second.Mains是什么意思?![]() ![]() Alternating Current flows one way,then the other way,continually reversing direction.An AC voltage is continually changing between positive(+)and negative(-).The rate of changing direction is called the frequency of the AC and it is measured in hertz(HZ) which is the number of forwards-backwards cycles per second.Mains
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2013-05-23 12:21:38
交流电流的一种方式,那么其他的方式,不断扭转direction.An交流电压是不断变化之间的正极(+)和负极( - )。改变方向的速度被称为交流的频率和测量单位是赫兹(Hz),其在英国每second.Mains电力向前向后周期频率为50HZ。
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2013-05-23 12:23:18
其中一个方法交流电流量,然后在其他方式、不断扭转方向。一个是交流电压之间不断变化积极(+)和消极(-).率的变化的方向是所谓的频率AC,乃以赫兹(Hz),这是向前的数目-后退周期每第二.水管电力在英国的频率50HZ。
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2013-05-23 12:24:58
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2013-05-23 12:26:38
交变电流流动一种方式,然后其它方式,不断地扭转方向。交流电压阳性 (+) 和 negative(-) 之间不断变化。改变方向的速
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2013-05-23 12:28:18
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