单词	cascade shower
释义	cascade shower noun : a cosmic-ray shower in which a high-energy electron produces one or more photons that convert into electrons and positrons by pair production, these secondary electrons producing the same effect as the primary, the shower thus building up until the level of energy becomes so low that photon emission cannot occur Word History First Known Use 1938, in the meaning defined above
随便看	intervening intervenor intervenors intervention interventional interventionism interventionisms interventionist interventionists interventions interventor interventors interventral interventricular interversion intervert intervertebral intervertebral disc intervertebral discs intervertebral disk intervertebral disks intervertebral foramen intervertebral foramens intervertebral foramina intervesicular

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