The antimuon decay also conserves the total light and heavy lepton numbers.在反μ子衰变中,总轻轻子数和总重轻子数也是守恒的.This work is one of the series , which studies the lepton identificationin the BES ( Beijing Spectrometer ) in detail.这项...
一块木头被加热到很高的温度.A piece of wood is heated to a high temperature.当被加热时, 金属便膨胀.When when heating, the metal thus expands.水被加热和冷冻时,所产生的作用[反应]不一样.Water behaves in different ways when it is heated and when it is frozen....