| 单词 | photogelatin |
| 释义 | Definition of photogelatin in English:photogelatinnoun
OriginLate 19th century; earliest use found in Edward H. Knight (1824–1883), patent lawyer and expert in mechanics. Definition of photogelatin in US English:photogelatinnoun
OriginLate 19th century; earliest use found in Edward H. Knight (1824–1883), patent lawyer and expert in mechanics. |
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