可以包含包封、反包封或加密。
胶块用聚乙烯薄膜包封。
使用包封方法形成农学活性物质的安全递送系统。
A safe delivery system of agriculturally active material is formed using an encapsulation process.
用此法制备出的碘醚柳胺豆磷脂脂质体包封率高达57.54 %。
The encapsulated rate of Raf-Spc-liposomes was up to 57.54%.
我相信除了那包东西外，莱克勒船长还另有一封信托他转交的。
I believe that, besides the packet, Captain Leclere confided a letter to his care.
两封英文推荐信（格式见申请文件包）；
6 two letters of recommendation in English (see application form);
两封英文推荐信（格式见申请文件包）；
6 two letters of recommendation in English (see application form);
应用推荐