Mach
noun [ U ] uk/mɑːk/ /mæk/ us/mɑːk/ /mæk/
马赫(飞行速度与音速之比值)
a measurement of speed that is calculated by dividing the speed of an object, especially an aircraft, by the speed of sound
江苏热线英汉汉英双解词典包含207361条英汉翻译词条,涵盖了常用英语单词及词组短语的翻译及用法,是英语学习的必备工具。