James Alfred Van Allen
| Noun | 1.James Alfred Van Allen - United States physicist who discovered two belts of charged particles from the solar wind trapped by the Earth's magnetic field (born in 1914) |
英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。