单词 | Pectinibranchia |
释义 | Pectinibranchia [´pek·tǝ·nǝ`braŋ·kē·ǝ] INVERTEBRATE ZOOLOGY An order of gastropod mollusks which contains many families of snails; respiration is by means of ctenidia, the nervous system is not concentrated, and sexes are separate. |
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