| 单词 | manganese brown |
| 释义 | Definition of manganese brown in English:manganese brownnoun
OriginMid 19th century; earliest use found in Thomas Graham (1805–1869), chemist. Definition of manganese brown in US English:manganese brownnoun
OriginMid 19th century; earliest use found in Thomas Graham (1805–1869), chemist. |
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