“protonephridium”的概念、定义、翻译、参考文献-科学参考

单词	protonephridium
释义	protonephridium [´prōd·ō·nǝ`frid·ē·ǝm] ^{INVERTEBRATE ZOOLOGY} 1. A primitive excretory tube in many invertebrates. 2. The duct of a flame cell.
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