The lepton number is generalized to the lepton charge.

我们把轻子数推广为轻子荷。

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The quarks have not only baryon number and charge but also lepton charge.

夸克不仅带有重子数、电荷，而且也带有轻子荷。

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It is proved that only lepton charge is strictly conserved and the individual conservation of the lepton number of every generation of leptons hold only approximately.

证明了只有轻子荷才是严格守恒的，各代轻子数分别守恒只能近似成立。

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