This device consists of self-coupling transfer, digital logic circuit and low voltage relay circuit.

它由自耦变压器、数字逻辑电路和低压小继电器电路组成。

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This device consists of self-coupling transfer, digital logic circuit and low voltage relay circuit.

它由自耦变压器、数字逻辑电路和低压小继电器电路组成。

youdao