首先叙述了弱相互作用的数学模型。

The mathematical model of the weak interaction is described at first.

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然而，由于这种相互作用非常弱，所以这些实验都非常精细。

Yet since the interaction is very weak, these experiments are very elaborate.

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然而，由于这种相互作用非常弱，所以这些实验都非常精细。

Yet since the interaction is very weak, these experiments are very elaborate.

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