質(zhì)子的質(zhì)量幾乎是電子的2,000倍。Protons are nearly 2000 times as heavy as electrons.自由基是一種具有未配對(duì)電子的分子碎體.A free radical is a molecular fragment having an unpaired electron.在物質(zhì)中的貫穿能力,都是和電子的動(dòng)能E有關(guān)的.Penetration in matter depends on the kine...