dust-free的用法和樣例：
例句
用作形容詞 (adj.)
- Three symbols rose from the dust.
三個神諭從封塵的土中浮起。 - 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.
根據流體力學射流理論，分析了空氣幕在綜采工作面隔離粉塵的作用，並根據綜采工作面應用空氣幕隔塵的特點，設計了空氣幕。
辭彙搭配
- dust-free air 無塵空氣
- dust-free atmosphere 無塵大氣
- dust free air 無塵空氣
- dust free 防塵的
