Methods Core tablets containing osmotic active agent were prepared by direct compression and spray coated with swelling layer and semipermeable membrane subsequently.
方法粉末直接压片法制备含渗透活性物质的片芯，滚转包衣锅法分别包溶胀层和控释衣层。
Digital compression techniques is the core technology of digital television.
数据压缩技术是数字电视的核心技术。
Through analyzing the core algorithm of the JPEG2000, this paper describes the image compression process and the advantages of the JPEG2000 compared with the previous standards.
通过对JPEG2000中核心算法的分析，阐述了JPEG2000压缩过程以及与现有压缩标准相比显示出来的优越性能。
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