| 单词 | speed |
| 释义 | speed The ratio of a distance covered by a body to the time taken. Speed is a scalar quantity, i.e. no direction is given. Velocity is a vector quantity, i.e. both the rate of travel and the direction are specified |
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物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。