| 单词 | shadow-photometer |
| 释义 | > as lemmasshadow-photometer shadow-photometer n. a kind of photometer invented by Rumford, in which light is measured by means of two shadows cast by a vertical rod upon a white screen. ΚΠ 1905 G. F. Goodchild & C. F. Tweney Technol. & Sci. Dict. s.v. Photometers A simpler arrangement, which possesses the advantage that it may be used in a room which is not quite dark, is Rumford's Shadow Photometer. < as lemmas |
| 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。