碳水化合物部分由半乳糖,葡糖胺, 岩藻糖和唾液酸组成.The carbohydrate portion is made of gala ctose, glucosamine, fucose and sialic acid.几丁质是N - 乙酰葡糖胺.Chitin is a polymer of N - acetylglucosamine.目的调查葡糖胺对慢性腰背痛和退行性腰椎骨关节炎病人的治疗效果.Objective To invest...
Mixed liquor from the last stage of media a weir and flows to a secondary clarifier.经过最后盘片阶段的混合液经过出水堰流入二沉池.Conclusion: The natural Harvest clarifier can substitute ethyl alcohol in the procedure of removing the impurity....
The amoeba is a very simple organism.变形虫是很简单的生物体.An amoeba forms a cyst when conditions are unfavourable.当环境不利时,变形虫产生包囊.The amoeba, a denizen of fresh water, is such a case.变形虫, 一种淡水生物, 就是这种情况....