The mustard is sold in powder form.

芥末是以粉末状出售的。

《牛津词典》

I just take a capsule, but you can take it in powder form if you prefer.

我吃的是胶囊，你也可以使用冲剂。

youdao

The Raman spectrum of crystalline trichosanthin in powder form is stu-died.

本文报道粉末状结晶天花粉蛋白的拉曼光谱。

youdao

The states that produce anthrax and the required specs that can be used to spread the disease widely, say in the powder form, very few states can do that.

CNN: Saddam Hussein

The drug is in the form of a white crystal powder and can have a hallucinogenic effect.

BBC: Police outside the flat in Witham

Italian pasta and Indian rice are sold alongside milk powder from Dubai and reminders of recent aid dependency in the form of cooking oil from the World Food Programme.

ECONOMIST: Surprising Somalia