质子衰变；衰变寿命；重子数守恒；探测器。
Proton decay, Decay lifetime, Baryon-number Conservation, Detector.
而大统一理论则预言在原子核中的核子将衰变，重子数守恒将被破坏。
However, the nucleons in nucleus will decay and baryon-number conservation may not be absolute according to the Grand unified theory.
而大统一理论则预言在原子核中的核子将衰变，重子数守恒将被破坏。
However, the nucleons in nucleus will decay and baryon-number conservation may not be absolute according to the Grand unified theory.
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