The method of sulfomethylation modification of bayberry tannin extract was investigated.研究了毛杨梅栲胶的磺甲基化改性方法.Evident ancient treasure of the bayberry.足见古时对杨梅的珍重.Forever that also grows the not big grape, always red bayberry...
Hard elastic polypropylene is formed by crystallized under strain and annealing.硬弹性聚丙烯是在应变结晶和热结晶两个复合过程中形成的.The suitable recovery strain annealing temperature was 500 ℃.适宜的回复应变退火温度为500℃.To optimize sub - job assignments, ...
At no time did I feel rushed or under pressure.我任何时候都不会觉得仓促或者有压力。I'm rarely under pressure and my co-workers are always nice to me.我很少感受到压力，同事们一直对我很好。They worked hard together, competitively and under pressure.他们在一起...