Nami pearl powder points to that with its diameter reaching the nanometer grade. 纳米珍珠粉是指在直径上达到纳米级的珍珠粉。
The research and development of nanometer-sized solid powdermaterials are a topic of general interest in the material field at present. 对纳米级固体粉末材料的研究与开发是当前材料领域中非常热点的课题。
