sclerite

1. The hypothesized function of subcostal brace in mayflies is to strengthen the connection between distantly separated longitudinal veins because of sclerite plate at radius vein base.
   亚前缘脉弓的作用相信是加强了因翅基骨板发达而相互远离的纵脉间的连结作用。

noun

1. hard plate or element of the exoskeleton of some arthropods