They covered it in rigid keratin bristles 4-6cm long and 0.5mm in diameter at a density of around three fibres per square centimetre, then put it in a virtual wind tunnel.

• 在它的上面以每平方厘米大约三根纤维的密度，覆盖了长度 4-6 厘米、直径 0.；5 毫米的刚性角质猪鬃，然后将其放入一个虚拟的风洞中。