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单词 purple bacteria
释义

WordReference Random House Unabridged Dictionary of American English © 2024
purple bacteria, 
  1. Microbiologya group of Gram-negative pink to purplish-brown bacteria, comprising the purple sulfur bacteria and purple nonsulfur bacteria, that occur in anaerobic aquatic environments and carry out a unique form of photosynthesis without oxygen, using the pigment bacteriochlorophyll.
  • 1895–1900

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更新时间:2025/7/23 6:54:52