On continuity equation and energy equation basis, mathematic model of single-heat-source and tree-shaped steam heat-supply network was established.
根据质量、能量的基本方程,建立了单热源枝状蒸汽供热管网的数学模型;针对枝状管网结构,着重分析了各管段的管径规格和保温层厚度对系统投资和运行热损费用的影响;应用整数规划和动态规划的方法以及分枝定界的思想,提出了以管网投资、运行费用为目标函数,满足用户参数要求及遵循蒸汽流动规律的约束条件,从而建立了优化数学模型。
Study of synthesis and properties of dendritic polyether surfactants;
树枝状聚醚表面活性剂的合成与性质
Synthesis of dendritic quaternary ammonium salt containing three stearamido groups;
含三个硬脂酰胺基的树枝状季铵盐的制备
Star and Dendritic Ferrocenyl Poly (metallocenes);
星形和树枝状二茂铁基聚合物
Large-scale hierarchical CdS dendrites were synthesized by hydrothermal treatment of CdCl2·2.
5H2O和硫脲作先驱物,L-α-丙氨酸作为修饰剂,水热法合成了树枝状的硫化镉。
In this article, the re- cent progress in dendronized EO materials is reviewed, mainly including EO dendrimers, dendronized EO polymers and supermolecular self-assembled EO polymers.
目前,研究的焦点主要集中在树枝状电光材料。
Results showed that the dendrimer provided superior properties and can be used for UV curing coatings.
以三氯氧磷、丙烯醇、端羟基聚酰胺为原料,合成了可快速光固化的含磷树枝状紫外光固化涂料,并通过红外、核磁表征了产物结构。
Dendritic TiC was fabricated by laser surf ac e alloying of pure titanium with graphite powder.
EPMA分析知合金化层内生成了TiC树枝状晶。
Based on theoretic research and case studies, compares the difference of looped duct system and tree-shaped duct system in the flow distribution and pressure loss.
在网络计算模型和算例分析的基础上,比较了环状风道和枝状风道在风量分配和阻力损失方面的区别,指出环状风道能通过调整分支风道风量分配自动实现不同支路的阻力平衡,从而降低整个风道系统的阻力损失,提高变风量系统的调节性能。