arachnidan的音标：arachnidan的英式发音音标为：[ə'ræknɪdən]arachnidan的美式发音音标为：[ə'ræknɪdən]...

adj.& n.节肢类的（动物）...

蛛形纲...

Arachnida的音标：...

Spiders, mites, etc. come under the head of Arachnida.蜘蛛 、 螨等归入蛛形纲.Arachnida and Cecidomyidae had a higher relative abundance than other families being 0.3465 and 0.2309, respectively.蜘蛛类的相对丰盛度最高,为0.3465,瘿蚊科的相对丰盛度为0.2309...