the speed at which the energy of a wave or wave group travels.
| 单词 | θ75992 | 
| 释义 | the world > matter > physics > mechanics > types of motion > 			[noun]		 > wave > series of waves > velocity of (1)		 group velocity1881 the speed at which the energy of a wave or wave group travels. | 
| 随便看 | 
英语词典包含1132095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。