胶囊内药粉为白色或灰白色粉末。

White or off-white color powder inside the capsule.

youdao

它是一种无定形的无色或白色粉末。

It is an amorphous colorless or white powder.

youdao

硼砂是一种白色粉末。

Borax is a kind of white powder.

youdao

I know table salt is white, but that is because you have power and you have multiple surfaces scattering, but a large crystal of sodium chloride is clear and colorless.

我知道食用盐是白色的，但这是因为你让它成了粉末,因为有了多个散射面，但是一个大的氯化钠晶体,是无色透明的。

麻省理工公开课 - 固态化学导论课程节选