The analytical factors of ultraviolet spectrophotometry, such as concentration of alizarin reds, time and temperature, were evaluated to determine the leftover of melamine in dairy products. 研究紫外分光光度法快速检测乳制品中三聚氰胺的残留。分别考察了显色剂浓度、显色时间、显色温度对检测结果的影响。
The analytical results show that the stress concentration of intersecting interface between the passage and the main tunnels is obvious, which is influenced by passage width slightly. 分析结果表明,横通道–主隧道接口处应力集中较为明显,但受横通道宽度变化影响较小;
The production concentration is obtained by analytical method which had no truncation error and rational concentration. 由于用解析法求解浓度不存在任何截断误差,且浓度的解总是位于合理解的范围内,故采用解析法求解产出液浓度。
A New Analytical Model of High Concentration Arsenic and Boron Redistribution during Ion Implantation Annealing Course 离子注入退火过程中高浓度砷硼再分布扩散的一种新的解析模型
The analytical expressions of the relative concentration distribution and the effective diffusion coefficient are derived under Taylor's simplified assumptions and certain boundary conditions. 利用Taylor简化假定,在一定边界条件下,导出相对浓度分布和等效扩散系数的解析式,作出相应讨论。
Investigation on the Relationship Between Analytical Precision and Concentration With Robust Linear Regression Method 稳健线性回归法探讨分析精度与浓度之间的关系
By choosing appropriate sub-Green functions and source strength, three-dimensional analytical ambient concentration distributions of air pollutants from different highway vehicular emission types such as multiple point, line, and area releases are given. 通过Green函数分量与排放源强的线性组合,得到了公路机动车排放为多点源、线源和面源时污染物浓度三维分布的解析解。
Then, we chose the dispersion number as a characteristic minor parameter, solved the problem and obtained the asymptotic analytical solutions of solute concentration by singular perturbation method, and investigated the influences of various factors on the advancing of concentration front. 作者选择弥散数作为特征小参数,用奇异摄动法求得了溶质浓度在全流场的渐进解析分布,着重考察了各种因素对浓度前沿推进过程的影响。
An Approximate Analytical Solution for the Concentration Field and the Shape of Laminar Diffusion Flame 层流扩散火焰浓度场及火焰形状的近似理论解
Phosphorus doped solid phase efficiency and phosphorus incorporation coefficient can be represented in a obvious analytical function of phosphorus gas phase concentration, respectively, and from which, the calculated results are in agreement with the experimental curves and its extrapolated results. 磷掺杂固相效率和磷结合系数可以同时表示成磷气相浓度的明显的解析函数,其计算结果与实验曲线及其外推均相一致。
An analytical solution for dynamic stress concentration of underground cavities under incident plane P waves 平面P波入射下地下洞室群动应力集中问题解析解
The mathematical model of radionuclide migration in single fractured granite is studied under saturated flow and pulse injection. The analytical solutions of concentration distribution in fracture and rock matrix are given. 研究了在饱和水流条件下,花岗岩单裂隙中脉冲注入核素迁移的数学模型,给出了脉冲注入情况下裂隙和岩块中核素浓度分布的解析解;
An Analytical Solution for Solutes Concentration Distribution Model in Impermeable Stratum in Homogeneous Soil 不透水层上均质土壤中溶质浓度分布的解析解
Analytical Determination on the Formaldehyde Concentration in Newly Decorated Room 装饰新居室中甲醛含量的分析研究
Based on semi-infinite convection-dispersion transport equation, the condition of solution is established. The analytical solution of solute concentration in an instantaneous condition is developed by using Laplace transformation. 本研究以半无限溶质运移对流-弥散方程为例建立定解条件,运用Laplace变换推导出瞬态条件下溶质浓度在任意时刻和任一地点的解析解。
Development and Application of Computer Software Compiled with High Degree Curve in Calculation of Analytical Concentration 在分析测试含量计算中高次曲线拟合的计算机软件开发和应用
For mono-component impregnation model, a generalized boundary condition was suggested, and the analytical solution of the concentration profiles can be obtained for penetration-adsorption equation by shockwave theory. 对单组分浸渍于渗透-吸附模型提出了具有一般意义的边界条件,应用激波理论得到了浓度分布的解析解。
The replacement of equilibrium concentration by analytical concentration in determination of stability constants of complexes with equilibrium-shift method will lead great error. 平衡移动法在使用中时常以反应物的分析浓度代替平衡浓度,以致引起不容忽视的误差。
An analytical expression of stress concentration factor for a finite wide plate with an eccentrically placed circular hole 含偏心小圆孔的有限宽板条孔边应力集中系数的一种解析表达式
Analytical methods for solution concentration in crystallization process 结晶过程中溶液浓度的测量方法
Analytical results also show that stress diffusion and concentration occur between the relatively hard layer and the relatively soft layer of dam soil body. 分析结果还显示,在坝基土体相对硬层和相对软层之间出现了应力扩散和应力集中现象。
After the material balance for any a mixing pool, the analytical solutions of concentration on the evaporating surface, the distillate rate and the residue rate obtained. 对每个混合池进行物料衡算,可以得到蒸发壁面上浓度的变化和轻、重馏分流量和含量解析解。
The analytical solutions to velocity, concentration and Taylor's equivalent diffusion coefficient is deducted from Taylor's simplified assumptions, and numerical calculations are made. 在Taylor简化假定下导出速度、浓度和等效扩散系数的解析式,并作数值计算。
Market of automobile industry of our country is analyzed at first, and the analytical framework of FDI to the automobile market concentration of our country has been put forward. 分析外商直接投资对我国汽车产业和汽车产业市场集中度的效应,提出外商直接投资对我国汽车产业市场集中度效应的分析框架。
Analytical Method of Tritium Concentration in Air for Arid Land 干旱地区空气中氚浓度测定方法研究
Image method is employed to satisfy the traction free boundary conditions of the semi-infinite slab. The addition theorem for cylindrical Bessel function is used to accomplish the superposition of wave fields, and the analytical solution and numerical examples of the dynamic stress concentration factor are obtained. 利用镜像法满足结构边界处的应力自由条件,通过圆柱形Bessel函数的加法定理实现总波场的叠加,给出了动应力集中因子的解析解和数值算例。
The cylindrical wave function expansion method is employed to express the elastic wave fields, and the expanded mode coefficients are determined by satisfied the boundry conditions between the reinforcing phases and matrix material. The analytical solution of the dynamic concentration factor is derived. 采用圆柱形波函数展开法给出了弹性波场的解析表达式,通过满足增强相和基体交界面处的边界条件确定了展开模式系数,得到了动应力集中因子的解析解。
The analytical model which be used to predict the oxygen concentration under the fuel scrubbing and ullage washing is introduced. The models which predict the nitrogen volume needed in the process of cruise and descent were introduced, too. 介绍了燃油冲刷和气相冲洗条件下的氧气浓度分析模型,以及巡航和下降过程氮气需求量模型。
The multiple interfaces effect of nanowire is considered. The expanded mode coefficients and the analytical solution of dynamic stress concentration factor are obtained by satisfied the boundary conditions around the inner interface and outer interface of the nano-scale coating layer. 考虑了纳米线的多界面效应,通过满足涂层的内外边界条件求解出了展开模式系数和动应力集中因子的解析表达式。