2. The article discusses how to improve the
sizing properties of chitin size by enzyme degradation of chitosan.
![](http://img.kekenet.com/dict/image/sound.gif)
文章讨论了通过酶法降解改善甲壳素浆料上浆性能的相关问题。
3. Competition, male athletes to wear the shirt collar and
sizing Kanjian, female athletes wear skirts and even wear a hat.
![](http://img.kekenet.com/dict/image/sound.gif)
比赛时,男运动员要穿上浆领子的衬衣和坎肩,女运动员要穿裙子甚至还要戴帽子。