... amplifying power 放大率，放大倍数，放大能力 amplifying relay 继电器放大器；放大继电器 amplifying stage 放大级 ...
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relay amplifier ==> 中继放大器,继电器的放大器 relay amplifier relay panel ==> 继电器放大器 relay and contactor testing stand ==> 接触器,继电器试验台 ..
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... 继电器电路学 relay circuitry 继电器放大器 relay amplifier 继电器工程 relay engineering ...
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继电器的放大器 relay amplifier
继电器IC 3断开，保护放大器和钳位二极管。
Relay IC3 opens, protecting the amplifier and clamping diodes.
用于继电器、电源、放大器等电器元件保护。
Apply to protect electrical relay, POWER, amplifier and so on.
本发明涉及一种用交流电的电子音乐门铃，由普通电子门铃加整流电源、继电器及功率放大器构成。本发明不再需要电池供电。
This AC electronic music door bell is composed of general electronic door bell, rectified power supply, relay and power amplifier and does not need battery to power it.
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