rayometer
/reɪˈɒmɪtə/rare. Now disused
noun
Any of several instruments used in the measurement of radiant energy or light.
Origin
Late 19th century. From ray + -ometer.
| 单词 | rayometer |
| 释义 | rayometer/reɪˈɒmɪtə/rare. Now disused noun Any of several instruments used in the measurement of radiant energy or light. Origin |
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