Via chemic technique calculate, we get the average molecular weight and saturation vapor tension, thereby, we calculate the volatility.
通过化学工艺计算，得到了各馏分的平均分子量和饱和蒸汽压，进而求出其挥发度。
Use viscometry to determine viscosity-average molecular weight of oxidated polyethylene wax and introduce the measurement, process and effect factors in detail.
用粘度法测定氧化聚乙烯蜡的粘均分子量。对测定方法、步骤及影响因素做了详细介绍。
Hydrolyzing conditions affect DH markedly but have only weak influence on average molecular weight and positively charged peptide content.
水解条件对水解度有较明显的影响，但是平均分子量和正电荷肽相对含量的影响较弱。
The average molecular weight and molecular weight distribution were determined with acid hydrolyzed iron dextran samples.
样品经酸水解，测得右旋糖酐铁中右旋糖酐的重均分子量和分子量分布。
The number average molecular weight was determined as 78 650, the weight average molecular weight as 125 446, the molecular weight distribution as 1. 59 by gel permeation chromatography.
采用凝胶渗透色谱仪测试其数均相对分子质量为78 650，重均相对分子质量为125 446，相对分子质量分布为1．59。
Gel Permeation Chromatography was used to determine the distribution and average molecular weight of polyether polyols.
用凝胶渗透色谱测定聚醚多元醇的相对分子质量及其分布。
The water insoluble precipitate (acetic acid lignin, AcL) had a low weight-average molecular weight range from 341 to 253 (Mw) and a narrow molecular weight distribution from 1.1 to 1.2.
水不溶沉淀物（乙酰化木质素）的重均分子量分布在341到253之间，分散性系数分布在1.1到1.2这一窄范围内。
The expressions of the molecular weight distribution function and the average degrees of polymerization have been derived, and four special cases were discussed.
求得了分子量分布函数和平均聚合度的解析表达式，并讨论了四种特殊情况。
Average relative molecular weight was estimated by gel column chromatograph.
凝胶层析法测定海芋多糖的平均相对分子质量；
For 481 experimental data points of 29 hydrocarbons, including high-molecular-weight hydrocarbons, the new method gives a relative average error of 3.2%.
对29种包括大分子的烃类物质，481个实验数据点，本方法的平均相对计算误差为3.2%。
It introduced the gel chromatography to determine the average molecular weight and molecular weight distribution of high polymer.
介绍了用凝胶色谱法测定高聚物的平均分子量及分子量分布。
The VPO average molecular weight of vacuum residues and asphaltenes all decreased.
减压渣油和正庚烷沥青质的VPO平均相对分子质量都减小了。
Lower average molecular weight of LGV samples was unfavourable for the adsorption and hydration.
平均分子量太小，不利于产物的吸附与水化，平均分子量太大。
Different grades of crystal polystyrene molding pellets range from 150,000 to 350,000 weight average molecular weight.
不同牌号的结晶聚苯乙烯模塑粒料平均分子量范围从150,000 - 350,000。
The result shows the viscosity-average molecular weight of poly(L-lactic acid) attains to 232,000 synthesized by optimizing the reactive conditions.
结果表明：通过优化反应条件，使得在苯溶剂中合成出的聚L-乳酸的粘均分子量可达到232，000。
This paper studies the average molecular weight of branched chain of poly ( acrylic acid) by viscosity method. The structure of graft copolymer is also measured by IR method.
利用粘度法测定聚丙烯酸支链的平均分子量，红外光谱法分析接枝共聚物的结构。
The results showed that the average molecular weight of methyl hydrogen silicone, amine structure and Si content in amino modified polyether polysiloxanes have some effects on APEPS performance.
结果表明，含氢硅油分子量、有机胺结构、氨基改性聚醚型聚硅氧烷的硅含量对APEPS性能有影响。
The structural unit of extract consists primarily of aromatic rings and cycloparaffinic rings. The average molecular weight of the extract is 448. The aromaticity is 0.53.
萃取物的结构单元主要由芳环和脂环所构成，萃取物的平均分子量为448，芳碳率为0.53。
Application experiment results show that average molecular weight of staple methyl hydrogen silicone and si content of piperazine modified polyether polysiloxane have effects on PPEPS performance.
结果表明：原料含氢硅油的平均相对分子质量、PPEPS的硅含量对其应用性能有影响。
The effects of ionic liquids on viscosity, hydrocarbon composition and average molecular weight of heavy oils are investigated.
研究了离子液体对稠油黏度、组成和平均分子量的影响。
And weigh average molecular weight of original oxidized starch and oxidized starch was 7238.70 and 2915.44 respectively, which was determined by high performance liquid chromatogram (HPLC).
高效液相色谱得到初氧化淀粉的重均分子质量为7238·70，氧化淀粉重均分子质量为2915·44。
The glyceryl was used as standard to calculate Number—Average Molecular Weight of polyether. The result showed that it was accurate, convenient and high speed method.
用甘油基作标准求出了聚醚的数均分子量，结果表明此法准确、方便、快速。
In addition, the obtained results showed that the number average molecular weight is independent of the conversion and only relative to the reaction temperature at lower conversion stage.
此外，结果表明，在低转化阶段，数均分子量不随转化率改变，仅与聚合反应温度有关。
The release rate of wafer which was prepared by low average molecular weight PLGA is faster than high average molecular weight PLGA.
PLGA相对分子质量低的膜片释放速率较快，并且释放不很稳定。
The polymer with a viscosity average molecular weight beyond 200 000 was fairly reproducible by optimizing the polymerization conditions.
优化聚合条件可以获得粘均分子量大于200 000的聚丙交酯材料，聚合结果具有良好的重复性。
The DS, intrinsic viscosity and weight-average molecular weight of the products were calculated. The products were characterized with IR and NMR spectroscopy.
测定了产物的取代度、特性黏度、 相对分子质量、 吸湿保湿性，并用IR、 NMR进行结构表征。
The average molecular weight and its distribution of polystyrene obtained in microsegregation reactor are also between those of piston flow...
产品平均分子量和分子量分布亦介于平推流反应器和微观最大混合反应器之间。
The average molecular weight and its distribution of polystyrene obtained in microsegregation reactor are also between those of piston flow and maximum micromixing...
产品平均分子量和分子量分布亦介于平推流反应器和微观最大混合反应器之间。
The average molecular weight and its distribution of polystyrene obtained in microsegregation reactor are also between those of piston flow and maximum micromixing...
产品平均分子量和分子量分布亦介于平推流反应器和微观最大混合反应器之间。
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