... mains immersion heater 市电浸没式热器 mains supply 市电电源 majority carriers 多数载流子 ...
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主要的电力供给是来自市电电源并通过一个集合线圈激发；电流范围从5到125安培。
The primary power supply is powered from the mains supply and energizes a lumped coil; the current ranges anywhere from 5 to125 amps.
可选带电池，用市电输入电源，适合各国电网及电压不稳地区。
It can select battery, electric supply input power, it is suitable for most countries electric net and pressure.
目前，我们现有的市电系统存在不稳定因素，为保证计算机和网络系统的供电正常，应使用UPS不间断供电电源。
At present, Urban electricity system exists unstable factor, for guaranteed the normal supply of power for computer and network system, UPS should be used to supply uninterrupted electric power.
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