Substitutable goods, the greater the higher the degree of substitution, demand more sensitive to price changes;
可替代商品越多，替代程度越高，需求对价格的变动就越敏感；
Under these conditions, it is possible to quickly obtain carboxymethyl potato starch with higher degree of substitution and viscosity.
在此条件下可以快速获得较高取代度和粘度的羧甲基马铃薯淀粉。
The influences of reaction temperature and time, the amount of sulfuric acid and water on the degree of substitution were investigated.
分别考察了反应时间、反应温度等对取代度的影响。
With the determined parameters of synthesis, we can obtain CMS with high degree of substitution of 1.10 in one step carboxymethylation process.
在所确定的最佳反应条件下，能制备取代度为1．10的羧甲基淀粉醚。
The effects of sodium hydroxide, reaction temperature, reaction time, acrylamide concentration on the reaction efficiency and degree of substitution were studied.
考察了碱用量、反应温度、反应时间、丙烯酰胺浓度对反应效率和取代度的影响。
The solution of sodium carboxymethyl cellulose CMC is a colorless transparent colloid, and the transparency is improved with the increase of the degree of substitution.
羧甲基纤维素钠CMC的溶液为无色透明胶体，透明度随代替度的增加而相应的改善。
The results also show that the extent of impacts from biofuel is highly dependent on international oil prices and the degree of substitution between biofuel and gasoline.
生物能源对农业及其它产业部门的影响程度高度依赖于国际石油价格，以及生物能源与汽油的替代程度。
The product is high in degree of substitution, whose substituent distribute equally, has characteristics of high viscosity, high content of sodium, high acid-viscosity ratio.
该产品的取代度高，取代基分布均匀，具有高粘度、高钠含量、高酸粘比、高盐粘比的特点。
RESULTS AND CONCLUSION: With the degree of substitution and molecular weights increased, the stability of the nanoparticles enhanced, critical micelle concentration decreased.
结果与结论：随着相对分子质量和取代度的增加，粒子稳定性增强，临界胶束质量浓度降低。
The effects of the molar ratio of activated tapioca starch to maleic anhydride, the reaction temperature and reaction time on degree of substitution of esterified starch were examined.
讨论了活化木薯淀粉与马来酸酐的摩尔比、反应温度、反应时间对酯化淀粉取代度的影响。
Higher feed ratio could lead to higher loading capacity and lower encapsulation efficiency under the same degree of substitution of cholesteryl moiety and molecular weights of parent pullulan.
当取代度和相对分子质量相同时，随着投料比的增加，载药量增加而包封率降低。
This paper discusses the optimum condition for preparing carboxymethyl starch with high degree of substitution and high viscosity by using the solution isopropanol-water through etherification.
探讨了以异丙醇-水作溶剂，通过一次醚化，制备高取代度、高粘度羧甲基淀粉醚的最佳条件。
The low degree of substitution cationic starch was synthesized in dry process by using petroleum ether as dispersant. The reaction efficiency was more effective and the product was more homogeneous.
用石油醚作为分散剂，干法制备低取代度阳离子淀粉，反应效率更高，产品更均一。
Study the dosage of the water temperature, etherification, solvent quantity of CMS viscosity and substitution degree.
研究了水的用量，醚化温度，溶剂的量对CMS的粘度和取代度的影响。
The paper introduces the present research carboxymethyl starch synthesis principle and method, and the substitution degree of carboxymethyl starch test methods were introduced in detail.
本文介绍了羧甲基淀粉的研究现状，合成原理和方法，并对羧甲基淀粉取代度测试的方法进行了详细的介绍。
In the paper, an ashing method was improved to characterize the degree of carboxymethyl substitution of carboxymethyl chitosan.
本文改进了用于测定羧甲基壳聚糖羧甲基取代度的灰分分析法。
A series of CMS with different substitution degree are synthesized by dry preparation, and size paste and films are also tested.
采用干法工艺制备了不同取代度的羧甲基淀粉，测试了其浆液、浆膜性能。
It is suggested that acidizing treatment and titration should be appended to SY 5093 92 to determine the substitution degree of CMC produced with water-medium method.
建议在现行SY 5093—92标准中增加酸化滴定法附则，用来测定水媒法生产的CMC产品的取代度。
When substitution degree is 0.030, sizing property of cotton yarn is better and it is feasible for sizing polyester cotton yarn.
取代度为0.030时对纯棉纱上浆性能优越，对涤棉纱上浆性能可行。
Considering the substitution relationship between standardized product and customized product, this paper focus on the analysis on the market elasticity of customizing degree and price rising rate.
针对标准产品与定制产品有替代关系的情况，论文分析了市场需求对定制程度的弹性、市场需求对加价率的弹性。
Elasticity of substitution — a measure of the degree to which two factor inputs complement or substitute for one another in production.
弹性代换——产品中的两个因素投入产品中相互补充或是代替的衡量度数。
The effects of degree substitution on retrogradation and anti-mycotic were less.
糊黏度则先减后增。取代度的变化对沉降性和抗霉菌能力影响不大。
His first idea was to get rid of the term next to the highest in degree by a substitution.
他的头一个想法是用置换法消去比最高次项次数小一次的项。
The effect of assistance of ultrasonic wave on granule appearance of corn starch and the substitution degree were investigated.
研究了超声辅助作用对淀粉颗粒形貌和产品取代度的影响。
The substitution degree of sulfated hemicellulose A was 0.36.
所得到的硫酸酯化半纤维素A产品取代度为0．36。
Test of Influence of Substitution Degree on Cationic Starch Property;
考察了影响取代度的各因素，确定了最佳工艺条件。
X-ray photoelectron spectroscopy (XPS) indicated that the higher reaction activity of alkyl halide, the more alkyl substitution degree on hydroxyl group of chitosan.
对烷基化壳聚糖进行X射线光电子能谱分析表明，随着卤代烷试剂反应活性的增高，发生在壳聚糖羟基上的烷基取代反应增多。
X-ray photoelectron spectroscopy (XPS) indicated that the higher reaction activity of alkyl halide, the more alkyl substitution degree on hydroxyl group of chitosan.
对烷基化壳聚糖进行X射线光电子能谱分析表明，随着卤代烷试剂反应活性的增高，发生在壳聚糖羟基上的烷基取代反应增多。
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