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- A hindered polyetherketone endcapped with p (t butyl)phenol was synthesized. 1H NMR technique was used to seek for the number average molecular weight of this new polymer. 以对叔丁基苯酚为封端剂，合成带烷端基的多苯基取代联苯型聚醚酮，测定其1H－NMR谱，根据链中芳环质子共振峰与链端基质子峰积分强度比求解分子量。
- The mass loss were similar to those in vitro, and molecular weight changes were the same to those in vitro,but the number average molecular weight did not fit the Pitt?s model. PDLLA膜体内降解重量保持率类似体外，虽然体内的数均分子量不符合Pitt动力学模型，但两条件下分子量变化一致。
- To determine the number average molecular mass of chitosan-oligosaccharide by u-sing the acetylacetone s method based on the color-producing reaction with amino terminal . 采用乙酰丙酮与氨基端反应的生色原理,将乙酰丙酮法应用于甲壳胺寡糖数均分子量的测定。
- The weight average of relative molecular weight of hydroxypropyl sulfated oligo-konjac glucomannan is l595D, the number average of relative molecular weight is 1572D, and PDI (MW/MN) is 1.01 by GPC. 凝胶色谱测定重均相对分子质量1595D，数均相对分子质量1572D，分子量分布PDI(MW/MN)为1.;01，表明样品是单分散性分子量分布。
- number average degree of polymerization 数平均聚合度
- Instantaneous number average degree of polymerization 瞬时数均聚合度
- Keywords Vapor pressure osmometry;Number average molecular weight; 气相渗透法;数均分子量;
- He thumbed through the directory to look for her number. 他翻阅电话号码簿找寻她的号码。
- Let me note down your address and telephone number. 让我记下你的地址和电话号码。
- The number averaged molecular weights of the obtained polymers increased linearly with monomer conversion, and molecular weight distributions were unimodal throughout the reaction. 所得聚合物的数均分子量随单体转化率的增加而线性增长，而且分子量呈单峰分布。
- He picked a winning number on the first draw. 他第一次便抽到一个中奖号码。
- The number of fish in coastal waters has decreased. 沿海鱼的数量已减少了。
- The number represented by the digit or digits in2. 在释文2。中所说的由一位或几位数字表示的数。
- The students in our class number thirty. 我班总共有三十名学生。
- I dialed the right number, but nobody answered. 我拨的号是对的，但没有人接电话。
- A number of new hats were on parade at the wedding. 在婚礼上见到有些人戴著新式的帽子。
- A number of satellites are now circling the earth. 一些人造卫星现在正环绕地球飞行。
- The number shall be cut in on a plate. 号码将雕刻在一块金属板上。
- I seriously question a number of your assertions. 对你所坚持的说法，有几点我甚为怀疑。
- Can you tell me the cancellation number? 能不能告诉我取消号码？
