a small discrete mass of solid or liquid matter that remains individually dispersed in gas or liquid emissions (usually considered to be an atmospheric pollutant)
例句
用作名词 (n.)
Nobody knows what such tests might be, especially for particulates. 没有人了解这种检测可能是怎样的,特别是对于微粒的检测更是如此。
Settleable solids are the particulates that settle out of a still fluid. 沉淀性固体是从静止液体中沉淀出来的微粒。