secondary fly信息详情
二次飞行
secondary───n.副手；代理人；adj.第二的；中等的；次要的；中级的
secondary consumer───次级消费者
secondary education───中等教育
secondary color───次生色；n.合成色，间色；二次色
secondary school───n.中学；中等学校
secondary products───次级产品；副产品
secondary consideration───次要考虑
secondary succession───[植]次级演替；次生演替系列
secondary stress───[力]次应力；次重音
secondary hydration of high fly ash content concrete is slow at the early period and then the velocity of it gradually increase.───高掺量粉煤灰混凝土早期二次水化较为缓慢，随后二次速度逐渐加快。
North-secondary school children said that the one we moved to say: Tuozhe heaven on the wings of hope that their loved ones, you have to fly high.───北川中学孩子们还说了一句感动我们的话：翅膀上驮着天堂亲人的希望，你要高高飞翔。
Activator can enhance remarkably the activity of fly ash and accelerate secondary hydration reaction of high fly ash content concrete.───激发剂能显著提高粉煤灰的活性，加速高掺量粉煤灰二次水化反应。