单词 | Mach |
释义 | Mach n. (in full Mach number) the ratio of the speed of a body to the speed of sound in the surrounding medium. Phrases and idioms Mach one (or two etc.) the speed (or twice the speed) of sound. Etymology: E. Mach, Austrian physicist d. 1916 |
随便看 |
英语词典包含43808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。