目的制备止血模, 研究壳聚糖 、 明胶、PEG400间的用量比及己二醛溶液的使用对止血膜机械性能的影响.Objective To prepare arresting bleeding film, study the dosage proportion of chitosan, gelatin and PEG 400....
When it returns to shore, the life-jacket will deflate and revert to a harness.返回岸上后，救生衣就会瘪掉，恢复成背带状。Of course, when the national emergency abates, much of China will revert to its familiar ways.当然了, 随着全国紧急状态消除, 中国的很多方面将回...
The science of agronomy helps farmers obtain larger and better crops .农业经济学帮助农民获得更多更好的农作物。Heavy agronomy clique and Si Mi order of believe in nature.重农学派和斯密都信奉自然秩序.Now he heads the agronomy department.现在他担任农艺系系主任....
Swamp vegetation represent the early stages of a HYDROSERE or HALOSERE.例如湖区边界、河流漫滩或者是干旱地区具有保水粘土的地段.The chloroplasts in the swamp reed were round - shaped with poorly developed grana.芦苇是一种多年生水生草本植物,其典型生境是淡水或含盐的沼泽、河边或湖边.Th...