fineness of the particles

例句：

1. 1. The engineer measured the fineness of the metal to ensure it metthe required standards.
   工程师测量了金属的细度，以确保它符合所需的标准。
2. 2.The fineness of the wine is determinedby its acidity and tannin content.
   葡萄酒的细度由酸度和单宁含量决定。
3. 3. The fineness ofthe sandpaper affects how smooth it iswhen sanding.
   砂纸的细度影响它在打磨时是否光滑。