Total glycosides were extracted from soybean hypocotyl. The Group B saponin Ba and Bb, Group E saponin Bd and Be and DDMP saponin α g and β g were isolated and purified by C18 column chromatography and high-performance liquid chromatography ( HPLC).

Usually, it encounters dynamic group membership in practical multicast applications. Adopting the idea of Greedy algorithm, this thesis presents a delay constraint dynamic multicast routing algorithm DDMP, based on k-shortest paths, finds a path for the node which apply for join in the tree.

最后，由于在实际组播应用中，通常面临着组播成员的动态变化的问题，论文借鉴了贪婪算法的思想，提出一个基于K条最短路径算法的时延约束动态组播路由算法DDMP。

In accordance with the characteristics of the physical structure and operating mode of distribution power system. the computer system structure model of distributed distribution management system ( DDMS) is firstly built. and by taking the unpredictability of the communication time delay of DDMS into account.

针对配电系统网络结构及运行方式的特点，在给出分布式配电管理系统（DDMS）计算机体系结构模型基础上，考虑DDMS数据信息通信延迟的不可预测性，提出并构造了DDMS潮流分布式异步迭代算法。

In this paper three dispersion management system: dispersion management soliton ( DMS) system, dense dispersion management soliton ( DDMS) system and dispersion-decreasing fiber ( DDF) soliton system were investigated by numerically simulation.

对常规色散管理孤子系统（DMS）、密集色散管理孤子系统（DDMS）、色散渐减光纤（DDF）孤子系统进行了数值模拟研究和分析。

Polarization mode dispersion ( PMD) effect in densely dispersion managed soliton ( DDMS) systems is studied by numerical simulations.

以数值模拟的方法研究了密集色散管理孤子（DDMS）系统中偏振模色散（PMD）效应的影响。

Research on Technological Process Design of DDNP Industrial Wastewater Treatment by Iron Chip Internal Electrolysis

铁屑内电解处理DDNP工业废水工艺设计的研究

Iron chip internal electrolysis method is an available method for DDNP wastewater treatment.

铁屑内电解法是处理DDNP废水的有效方法。

A Cheap Treatment Method of Acidic Waste Water from DDNP

DDNP酸性废水的廉价处理法

Analyze the Factors of the Getting Rate and the Quantity Control in DDNP Production

对提高DDNP得率及控制产品质量因素的分析

Application of the Crystalline Form Controlling Technology in DDNP Production

晶形控制技术在DDNP制造过程中的应用

Study on the Electrochemical Method for Treatment of DDNP Waste-water

电化学法处理二硝基重氮酚废水的研究

Comparing the performance of the DDNP initiating explosive through experiment, we find out the way to improve the pressure durability of DDNP.

通过试验，对二硝基重氮酚起爆药的性能进行比较，找出了提高二硝基重氮酚耐压性的途径，进一步提高了该起爆药的质量。

Then studies furtherly the DDPS of this kind of system and gets the neccessary conditions for DDPS decoupling based on the concept of zero-dynamics.

进一步研究了此类系统的稳定干扰解耦问题（DDPS），基于零动态的概念提出了DDPS可解的充分条件；

Study on the DDPS of a linear time-delay system

一类线性时延系统的稳定干扰解耦问题研究

Conclusion: The computed image processing technique in DDRS can be applied to the clinical examination of the proximal caries in premolars as an adjunct method.

结论：直接数字化X线摄影系统的图像处理技术可以用于邻面龋临床辅助诊断。

Dodecenly succinic anhydride ( DDSA) waxy corn starches with paste top viscosity and degree of substitution ( DS) were prepared by the base catalyzed reaction with starch granular in aqueous slurry.

在碱性条件下，蜡质玉米淀粉与十二烯基琥珀酸酐（DDSA）反应可制得较高黏度、适宜取代度（DS）的酯化淀粉。

A Novel Method for Site-directed Mutagenesis and Its Application in DdsA Mutant Research

一种新型的基因定点突变方法及其在DdsA突变研究中的应用

Therefor, the performance of the shortest path tree generated by FLSPT or the DDSP is same, but the efficiency of FLSPT is better than DDSP.

因此，FLSPT算法计算得出的最短路径树性能与DDSP算法一样，但计算效率比DDSP算法高。

Compose of Multi-agent Cooperation Group and its Arithmetic Analysis in DDSS

DDSS中Agent协作群的构建与算法分析

Modeling of Agent-based DDSS and Its Application

基于Agent的DDSS建模与应用

Detection Method of DDSS Signal by Correlation Function Envelope Peak

直扩信号的相关函数包络检测法