无板纲近义词与同义词按词义分组列出,使用时请结合具体语境。an order of Amphineura双神经目无板亚纲沟腹纲deep-water wormlike mollusks lacking calcareous plates on the body but having fine slimy spicules on the covering mantle无板亚纲无板类无板纲软体动物