“Petromyzonida”的概念、定义、翻译、参考文献-科学参考

单词	Petromyzonida
释义	Petromyzonida [´pe·trō·mī`zän·ǝ·dǝ] ^{VERTEBRATE ZOOLOGY} The lampreys, an order of eellike, jawless vertebrates (Agnatha) distinguished by a single, dorsal nasal opening, and the mouth surrounded by an oral disk and provided with a rasping tongue.
随便看	producer producer gas producer's risk producing gas-oil ratio producing horizon producing reserves product product bundle product demodulator product design product detector Productinida production production control production-decline curve production engineering production model production packer production program production reactor production requirements production standard production tank production test production time

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