质子的质量几乎是电子的2,000倍。Protons are nearly 2000 times as heavy as electrons.自由基是一种具有未配对电子的分子碎体.A free radical is a molecular fragment having an unpaired electron.在物质中的贯穿能力,都是和电子的动能E有关的.Penetration in matter depends on the kine...
斯蒂芬·蔡斯决心不辜负公司的期望。Stephen Chase had determined to live up to the expectations of the Company.小蝶定努力! 不辜负爱我的人! 嘻嘻!The small butterfly decides diligently! Innocent my person! Hee hee!承蒙老师的垂爱, 我们一定不辜负您的期望.Thanks to the teache...