- an instrument used in photometry, usually one that compares the illumination produced by a particular light source with that produced by a standard source
| 单词 | photometer |
| 释义 | WordReference Random House Learner's Dictionary of American English © 2024 pho•tom•e•ter /foʊˈtɑmɪtɚ/USA pronunciation n. [countable] WordReference Random House Unabridged Dictionary of American English © 2024
pho•tom•e•ter (fō tom′i tər),USA pronunciation n. [Optics.]
Collins Concise English Dictionary © HarperCollins Publishers:: photometer /fəʊˈtɒmɪtə/ n
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