phototimer
noun
1A photoelectric timer for regulating exposure time in radiography.
2A timer for races incorporating a camera which photographs the finish.
Origin
1940s; earliest use found in American Journal of Roentgenology.
| 单词 | phototimer |
| 释义 | phototimernoun 1A photoelectric timer for regulating exposure time in radiography. 2A timer for races incorporating a camera which photographs the finish. Origin |
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