micrite envelope

例句：

1. 1.The microcrystalline envelope is a crucial component in the manufacturing process.
   微晶包囊是生产过程中的关键成分。
2. 2. The microcrystalline envelope has been found to have unique properties that make it ideal for certain applications.
   微晶包囊被发现具有独特的性质，使其在某些应用中具有优势。
3. 3. The microcrystalline envelope was used as an effective barrier against moisture and dust.
   微晶包囊被用作有效的防潮和防尘屏障。