Apterygota

The name Apterygota is sometimes applied to a subclass of small, agile insects, distinguished from other insects by their lack of wings in the present and in their evolutionary history. Their first known occurrence in the fossil record is during the Devonian period, 417–354 million years ago.

单词	Apterygotous
释义	Apterygotous 英语百科 Apterygota The name Apterygota is sometimes applied to a subclass of small, agile insects, distinguished from other insects by their lack of wings in the present and in their evolutionary history. Their first known occurrence in the fossil record is during the Devonian period, 417–354 million years ago.
随便看	internal frictional angle internal frictional attachment internal frictional losses internal friction angle internal friction angle of discontinuity internal friction angle of rock internal friction characteristic internal friction coefficient internal friction disc internal friction factor internal friction force internal friction of liquids internal friction of rotor internal friction theory internal friction twist principle internal frontal crest internal frosting internal fuel internal fuel cycle internal fuel motion model internal fuel rod pressure Internal function internal function register internal function switch internal fund

Apterygotous

Apterygota