Morphometric analysis of angles of forewing veins might be a useful tool for biodiversity studies of honeybees and other bees. 前翅翅脉角分析有可能成为一种更有效、准确的种群形态分析方法。
Upperwing has pale greyish-white primary bases and often pale rufous or yellowish-brown forewing, paler than dark grey flight-feathers. 翼上初级飞羽呈现灰白色,翼前缘经常为淡棕色或黄棕色,比飞羽的深灰色要浅。
The Joined-wing aircraft maybe defined as an aircraft that incorporates tandem wings to form diamond shapes, in which forewing is aft swept with positive-dihedral angle and rear-wing is forward swept with negative-dihedral angle. 联结翼布局飞机可以被定义为由上反角的后掠前翼和下反角的前掠后翼联结在一起形成菱形框架结构的飞机。