There is not a single substance but has resistance to the flow of electrons.
任何物质对电子的流动都有阻力。
The flow of electrons is from the negative zinc plate to the positive copper plate.
电子从负的锌板流向正的铜板。电子从负的锌板流向正的铜板。
The flow of electrons is from the negative zinc plate to the positive copper plate.
电子从负的锌板流向正的铜板。电子从负的锌板流向正的铜板。
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