平均分子质量,Average molecular weight
1)Average molecular weight平均分子质量
1.The kinetic parameters of xanthan gum fermentation production such as cell density of Xanthomonas campestris XG-101 (OD650 nm), xanthan gum concentration, viscosity, average molecular weight, pyruvic acid functional groups and residual sugar, were determined in three different mixing systems.本实验通过对三种不同搅拌体系下黄原胶发酵动力学参数:野油菜黄单细胞菌XG-101菌体浓度、黄原胶浓度、黏度、平均分子质量、丙酮酸功能基团以及残糖的测定,验证了冷模条件下组合桨(上层下压式双折叶圆盘涡轮,下层六叶布鲁马金)体系和最大叶片式桨体系具有高气含率和优良传质性能的结论,更重要的是为工业上提高黄原胶发酵产量和发酵质量(黄原胶平均分子质量和丙酮酸功能基团的含量)提供理论指导,具有一定的实际意义。
英文短句/例句
1.The analysis of the molecular weight and amido content of oligochitosan prepared by two methods两种方法制备壳寡糖平均分子质量与氨基含量分析
2.The region of the atmosphere below 90 Km has a nearly constant mean molecular mass, and is therefore called the homosphere.90公里以下大气区域，具有一个接近恒定的平均分子质量，因此称为均匀层。
3.Determination of the Average Molecular Weight and Its Distribution of Polyether Polyols by Electrospray Ionization Spectrometry电喷雾质谱测定聚醚多元醇的平均分子量及其分布
4.Two Calculations of Average Energy of Rigid Double-Atom Molecule;刚性双原子分子平均能量的两种求法
5.Determination of Mean Relative Molecular Mass of Straight-chain Sodium Alkylbenzene Sulfonates by Gas Chromatography with Micro-wave Assisted Desulfonation微波脱磺-气相色谱法测定直链烷基苯磺酸钠的平均相对分子质量
6.The antigens were found to be homogenious and have a molecular weight of 87000 dalton asdetermined by gel-electrophoresis method.电泳分析得全抗原分子量平均为87000道尔顿。
7.Study on average molecular weights of the distillated fractions from different coal-derived oils煤液化生成油窄馏分平均分子量的研究
8.To apportion(weight)evenly, as over a door.将重量平均分配平均分布重量，如门上的
9.mean free path of gas molecules气体分子的平均自由程
10.A Measurement Sampling Test of the Mean Quality Index of Unit Product μ≥μ_0 for Normal Distribution;正态分布下平均质量指标μ≥μ_0的计量型抽样检验
11.(physics, chemistry) being or containing an isotope with greater than average atomic mass or weight.（物理学，化学）指原子质量或者原子量大于平均水平的同位素，或者含有这样的同位素。
12.Of or relating to an isotope with an atomic mass greater than the average mass of that element.重的原子质量比该元素的平均原子质量重的同位素的或与之有关的
13.In the first place, the fractional decrease in neutron energy per collision is, on the average, greatest for light nuclei.第一，平均来说原子核愈轻，每次碰撞后中子的能量损失分额就愈大。
14.(physics, chemistry) not having atomic weight greater than average.（物理学，化学）原子量不比平均水平高。
15.On Submanifolds with Parallel Mean Curvature Vactor in Space Forms;关于平行平均曲率向量的子流形(英文)
16.Pseudoumbilical Submanifolds with Parallel Mean Curvature Vector;具有平行平均曲率向量的伪脐子流形
17.Fault Research of Turbo Supercharger Rotor Mass Imbalance涡轮增压器转子质量不平衡故障分析
18.The mean operation time was 150 minutes, and the mean blood loss was<50 ml.平均手术时间为150分钟，平均出血量小于50毫升。
相关短句/例句
average relative molecular mass平均相对分子质量
1.Theiraverage relative molecular masses were determined by vapor pressure osmometer method.通过元素分析、平均相对分子质量的测定、核磁共振谱图和傅里叶变换红外光谱的分析,得到了两种液化油的平均分子结构式和相关的结构参数,并利用这些参数推测了模型分子的结构。
2.Different solvents were used to determine theaverage relative molecular mass of asphaltenes in Daqing,Shengli,Gudao and Liaohe vacuum residues.分别以苯、氯代苯和硝基苯为溶剂用 VPO法研究了辽河、孤岛、胜利和大庆减压渣油中沥青质在不同溶剂和不同温度下的分子缔合状况及渣油热转化过程中沥青质平均相对分子质量、缔合度的变化规律及其与生焦行为的内在关系。
3.NPS was then separated into four fractions with differentaverage relative molecular mass by means of solvent extraction.采用溶剂萃取法将NPS按平均相对分子质量的不同分离为若干组分,采用元素分析、1H-NMR及13C-NMR表征各组分的分子结构,并测定了它们的界面张力、临界胶束浓度(CMC)和在孤岛地层砂上的吸附量。
3)relative average molecular mass相对平均分子质量
4)average molecular weight平均相对分子质量
1.The preparation, process flow, and quantitative determinati on of content andaverage molecular weight of petroleum sulfonates were reviewed .综述了国内外三次采油用石油磺酸盐的制备方法、工艺流程及石油磺酸盐的含量、平均相对分子质量的测定方法 ,并对不同的测定方法作了比
2.it is found from the calculated KL values for various oils and pure hydrocarbons that KL reflects average molecular structure of oils and it decreases with the increase ofaverage molecular weight of heavy oil.考察了不同油品和纯烃的KL值，认为几值对于油品平均分子结构的反映是准确的，随重油的平均相对分子质量增大而降低。
3.The PS is separated into four fractions with differentaverage molecular weight by means of solvent extraction, and theaverage molecular weight is determined by biphase titration.采用本实验室以绥中低凝环烷基减压馏分油为原料在单管降膜式磺化反应器中合成的石油磺酸盐(PS),用溶剂萃取法将PS分离为不同平均相对分子质量分布的四组分,用两相滴定法测定各组分的平均相对分子质量,发现其有较宽的平均相对分子质量分布。
5)mean relative molecular mass平均相对分子质量
1.A liquid chromatography method using UV detector and ESI mass spectrometry has been developed by which themean relative molecular mass of sodium alkylbenzenesulfonates can be determined without any pre treatment.直接用高效液相色谱法将烷基苯磺酸钠按碳数分布分离 ,计算其平均相对分子质量 ;用紫外检测器和电喷雾 ( ESI)质谱进行检测的测定结果均与脱磺基气相色谱法的测定结果一致 ,重复性良好 ,且更为快速简便。
2.Themean relative molecular mass of three chitosan oligosaccharide samples was determined by this method, the results coincided with that by VPO method.用 3,5-二硝基水杨酸 ( DNS)作为显色剂 ,测定了甲壳低聚糖在完全水解前后还原性端基的变化 ,通过这种变化来确定甲壳低聚糖平均聚合度及平均相对分子质量。
6)Average molecular weight平均分子量
1.The change of viscosity and average molecular weight of heavy oil from Liaohe oilfield with temperature and reaction time are investigated in the paper.探讨了在注蒸气条件下,稠油的粘度和平均分子量随蒸气温度、反应时间的变化规律,研究了金属盐、油层矿物对稠油水热裂解反应的影响。
2.The refractive index, density, average molecular weight, elemental composition and 1H-NMR spectra of five coker gatches were determined.测定了大庆、胜利、辽河、管输等5种焦化蜡油的密度、平均分子量、折光指数、元素和1H－NMR核磁共振波谱等数据，研究了5种焦化蜡油的化学组成，包括饱和烃、轻芳烃、中芳烃、重芳烃和胶质5个组分的含量，并与直馏蜡油的数据进行了对比；采用改进的B－L法、n－d－M法和密度法计算了平均结构参数。
3.GPC analysis revealed that the average molecular weight and molecular radius of β-glucan were 9.30%,由此可用高效凝胶色谱测定其分子量,得到其平均分子量为9。
延伸阅读
平均①一致；统一：平均如一｜天下平均，合为一家。②均匀；无轻重或多少之分：平均分配｜平均主义。③将总数按份儿均匀计算：平均数｜平均成绩｜平均工资。
