Pure wool when burning, smoke, no flame blister, smelly, ash is glossy black solid, with a broken finger gently press it.

纯毛燃烧时无火焰，冒烟、起泡、有臭味，灰烬多呈有光泽的黑色固体，用手指轻轻一压就碎。

youdao

Pure wool when burning, smoke, no flame blister, smelly, ash is glossy black solid, with a broken finger gently press it.

纯毛燃烧时无火焰，冒烟、起泡、有臭味，灰烬多呈有光泽的黑色固体，用手指轻轻一压就碎。

youdao