茅草亭是独自放松和读书的阴凉清幽之所。Thatched pavilions provide shady retreats for relaxing and reading in privacy.我们在一家小亭里吃汉堡包.We were eating hamburgers at a kiosk.这座英式亭阁是令人赞叹的钢和玻璃建筑，大小和威斯敏斯特教堂相当。The British pavilion is an impressive ste...
缔和聚合物较 非 缔合聚合物而言是一种比较好的酸液稠化剂.Association polymer than the non - associated polymer is a relatively good acid viscosifier.通过对稠化剂和抗磨添加剂的筛选,研究以水为分散介质的润滑脂.Lubricating greases with water as dispersing media are studied by scr...