dust-free的用法和样例：
例句
用作形容词 (adj.)
- Three symbols rose from the dust.
三个神谕从封尘的土中浮起。 - An air curtain was designed according to the jet theory of fluid mechanics and the role and feature of air curtain to separate dust in a fully mechanized face.
根据流体力学射流理论，分析了空气幕在综采工作面隔离粉尘的作用，并根据综采工作面应用空气幕隔尘的特点，设计了空气幕。
词汇搭配
- dust-free air 无尘空气
- dust-free atmosphere 无尘大气
- dust free air 无尘空气
- dust free 防尘的
