A pustule is a small bump on the skin that contains or produces infected fluid or pus.
脓包是皮肤上的一个小肿块，含有或产生受感染的液体或脓液。
英语百科
Production fluid
（重定向自Produced fluid）
Production fluid is the fluid mixture of oil, gas and water in formation fluid that flows to the surface of an oil well from a reservoir. Its consistency and composition varies.
Fluids may be described by a multitude of characteristics including: