您要查找的是不是：
- The primary study was conducted on the synthesis and properties of unsaturated polyester containing multi-alicyclic groups in the backbone chain. 对主链含多脂环不饱和聚酯的合成和性能进行了初步研究。
- Chemical and Infrared analysis of purified samples shown that about 10% of total DBM was grafted onto LDPE backbone chain with covalent bond. 产品经二甲苯溶解，丙酮沉淀纯化数次后，由化学分析和红外鉴定表明，在挤出反应中确有40%25以上的DBM单体接枝到聚乙烯链上，接枝率可达到0．3DBM／100E。
- A low Mw polyamide resin is reacted with ethyl acrylate dicarbamate to form a comb-type prepolymer with polyamide as backbone chain and ethyl acrylate dicarbamate as side chain. 低相对分子质量的聚酰胺树脂和丙烯酸乙酯氨基甲酸酯基一异氰酸酯通过加成反应制得以聚酰胺为主链、丙烯酸乙酯二氨基甲酸酯为侧链的梳型预聚物。
- The calculated results indicted that the most significant descriptors affected on T_m are the value of benzene rings in the backbone chain LB, PMA, total molecular energy Et and Q_(O-). 并用FA分析了这些参数与聚酰胺类熔点的关系,研究表明影响T_m最显著的参数是主链中苯环的存在以及苯环的位置LB,也是影响T_m最大的因素,其次是主链上中性基团亚甲基与极性基团酰胺基的比例PMA,分子总能量E_t,酰胺基上氧原子的电荷数Q_(O-)。
- For the polysaccharides with immunity enhancement activity, the activity is affected by the constitutes of backbone chain, molecular size, and other factors which cause comformational changes of the polysaccharides. 对于免疫增强类多糖 ,多糖的主链组成、相对分子质量等对多糖的功效都产生影响 ,这些影响可能是通过改变多糖的高级结构发挥作用 ;
- The inductive effect of withdrawing and releasing group and the rigidity-flexibility of the molecular chain in the structure of molecular backbone chain influence the imidization reaction. 分子主链结构中的拉、推电子基团效应及分子链的刚柔性影响醯亚胺化反应。
- These men are the backbone of the country. 这些人是国家的中坚力量。
- Standing up to bullies takes plenty of backbone. 勇敢地对付暴徒需有大无畏精神。
- The backbone is an articulate structure. 脊椎骨是一种关节相连的结构。
- The chain has fallen foul of plants in the water. 链条已和水中的植物缠绕在了一起。
- She has a gold chain about her neck. 她在脖子的周围挂着一根金项链。
- The chain has run foul of some plants in the water. 铁链缠在水中的一些植物上。
- She wore a silver chain around her neck. 她脖子上戴着一条银项链。
- These two pieces of the chain hook together. 这两个链环套在一起。
- Agriculture used to be the economic backbone of this country. 农业曾是这个国家的经济支柱。
- He detached a link from a chain. 他从链子上拆下一个链环。
- The anchor chain took charge and ran out. 锚链失去控制而滑了出来。
- A pendant worn on a chain around the neck. 垂饰挂在脖子项链上的垂饰物
- He runs a chain of pasta restaurant. 他经营着一个面食餐馆联号。
- Have you the backbone to overcome the hard luck? 你有没有勇气战胜厄运?
