a micrometer used in a telescope, having horizontal and vertical wires at the focus of the eyepiece.
| 单词 | θ1456 |
| 释义 | the world > the universe > cosmology > science of observation > astronomical instruments > observational instruments > [noun] > telescope > part of > micrometer > types of (2) wire micrometer1772 a micrometer used in a telescope, having horizontal and vertical wires at the focus of the eyepiece. filar micrometer1874 Of or pertaining to a thread; esp. in filar micrometer, filar microscope, one having threads or wires across its field of view. |
| 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。