| 单词 | pencil-beam survey |
| 释义 | pencil-beam surveypencil-beam surveyA form of redshift survey where deep exposures of comparatively small fields are taken only at sparse intervals across the sky. This allows a compromise between sampling deep in the redshift direction with a wide sky coverage and an economical use of telescope time. |
| 随便看 |
|
英语词典包含2567994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。