查询词典 tripolymer

Terminated DFA-PEG-PPG tripolymer polyester,which was synthesis by adding long chain fatty acid or fatty alkanol into the reactionsystem, contained not only chain lipophilic group but also polyester-polyether group,and had the building effection of alkanol antifoaming reagent and polyether one. Thenovel design theory for structure of antifoaming reagent was put forward by studyingperformance of product.

这种新型结构聚酯的合成，为消泡剂分子结构的设计提出了一种的思路；采用嵌段聚合方法所合成的_m-_n嵌段聚酯型高分子表面活性剂，其分子量比DFA-PEG和DFA-PEG-PPG三元共聚酯的分子量更大，所表现出的乳化性能更为优秀。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。