比例,匀称,调和;
A series of polyurethane/ polyacrylate ( PU/ PA) composite elastomer were prepared by precursors polymerization. The mechanical properties of PU/ PA samples with different composition proportionment were tested.
采用预聚体法合成了一系列聚氨酯/聚丙烯酸酯复合弹性体,研究了组成比例对PU/PA复合弹性体的力学性能的影响。
The proportionment of corporation websites are 35 percent of all agriculture websites in 2005. Enterprise website's figure has increased nearly 10 times compared with 2000 year.
2005年,在农业网站中企业网站所占比例为35%,企业网站数目比2000年增长了近10倍。
简答网 · 高考英语
简答网 · 初中英语作文
简答网 · 中考英语
简答网 · 双语新闻