microsize grade

例句：

1. 1.The microsize grade of the material is crucial for its performance.
   该材料的微米级等级对其性能至关重要。
2. 2. This product is designed for use in microsize grades of materials.
   该产品设计用于在材料中的微米级使用。
3. 3. The engineers were tasked with developing a microsize grade of resin for the project.
   工程师们被指派开发该项目的微米级树脂。