clean district的用法和樣例：
例句
- Fumigation of clean areas may be useful for reducing microbiological contamination in inaccessible places.
對潔凈區內難以進(jìn)入的角落進(jìn)行熏蒸是減少微生物污染的有用的方法。 - The typical single door lyophilizer opens in the clean area only, and contamination between loads would be minimal.
在單門(mén)的箱體上，門(mén)只在潔凈區打開(kāi)，裝載過(guò)程中的污染最小。
