单词 | penetrameter |
释义 | penetrameter/pɛnɪˈtramɪtə/noun An instrument for determining the wavelength, intensity, or total received dose of X-rays by measuring photographically their transmission through layers of metal of known thickness. OriginEarly 20th century. From penetra- + -meter. Compare French pénétratomètre. |
随便看 |
英语词典包含243303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。