nanometer material scale的用法和樣例：
例句
- Nami pearl powder points to that with its diameter reaching the nanometer grade.
納米珍珠粉是指在直徑上達到納米級的珍珠粉。 - The research and development of nanometer-sized solid powdermaterials are a topic of general interest in the material field at present.
對納米級固體粉末材料的研究與開(kāi)發(fā)是當前材料領(lǐng)域中非常熱點(diǎn)的課題。
