| 单词 | chemical focus |
| 释义 | Definition of chemical focus in English:chemical focusnoun Optics Photography rare
OriginMid 19th century; earliest use found in Robert Hunt (1807–1887), chemist and photographer. Definition of chemical focus in US English:chemical focusnoun Optics Photography rare
OriginMid 19th century; earliest use found in Robert Hunt (1807–1887), chemist and photographer. |
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