选用了多种交联单体参与乳液聚合，确定丙烯酸丁酯为软单体，甲基丙烯酸甲酯和苯乙烯为硬单体，软、硬比为5：1，选用环氧丙烯酸酯为活性单体......

随着社会转型时期社会问题的社区化和家庭的小型化及其功能的社会化，客观上需要发展社区照顾与服务。通过整合社区内外资源，以及政府......

The objective of this research is to present a systematic analysis, in which we seek to identify the concepts of intelli......

It has been a long argument about the efficiency of non-formal education(NFE)regarding the plan to achieve education for......