“Arachnida”的概念、定义、翻译、参考文献-科学参考

单词	Arachnida
释义	Arachnida [ǝ`rak·nǝd·ǝ] ^{INVERTEBRATE ZOOLOGY} A class of arthropods in the subphylum Chelicerata characterized by four pairs of thoracic appendages.
随便看	toolhead tooling underplate underpunch underream undersaturated undersaturated fluid undersea mining undershoot undershot wheel undersize underspin understory understressing underthrow distortion underthrust undertow undervoltage protection undervoltage relay underwater acoustics underwater burst step attenuator step bearing step block step brazing

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