There : bearskin cap and hackle plume.
在那儿,戴着插有鸟颈毛的熊皮帽.
Three kinds of flight cross sections were researched including rectangular section, hackle section and trapezoid section.
本文讨论的螺纹断面形状为三种:矩形断面 、 锯齿形断面,梯形断面.
Firstly, hackle prevalence and inheritance of the ancient Chinese mathematics, medicine, astronomy. etc.
首先, 对中国古代数学 、 医学 、 天文学等学科知识的传承进行梳理.
Our "How To Be Smarter" series has raised the odd grammatical hackle.
来自THETIMES