In DDBS query processing, Semi-Join is often used to realize joins of relations distributed among different sites.

The Simulating analysis of measuring the Mean Time of Response in DDBS

分布式数据库系统平均响应时间模拟测定分析

The decision-directed channel estimation ( DDCE) can't track the channel variations in fast fading channels, and thus the system performance degradation occurs.

在快衰落信道情况下，基于判决指导信道估计（DDCE）法不能够很好的跟踪信道参数的变化，使得系统性能产生很大的恶化。

The Divorce Damages Compensation System ( DDCS) has existed for more than 100 years in the foreign legislative history, but it was not provided in Chinese Marriage Law ( Amendatory Acts) until the year of 2001.

离婚损害赔偿制度在国外立法史上已有一百多年的历史，而我国在2001年《婚姻法》（修正案）中才规定离婚损害赔偿制度。

The diagnosis of DDCS is highly complicated, requiring detailed radiological and histopathological evaluation as well as precise bioptic technique.

DDCS的诊断非常复杂，需要详细的影像学和病理学检查及准确的活检。

DDCS improves the marriage and family system in China, reflecting the protections from Chinese law for the weak in the marriage and life.

离婚损害赔偿制度使我国婚姻家庭制度得到进一步的完善，体现了我国法律对婚姻家庭关系中弱者的保护。

Interface Design of Multiple DDCs

多片DDC接口的设计

The double differential cross sections ( DDCS);

双微分截面（DDCS）；

The synchronization algorithms are the mechanism of guaranteeing the rightness of the causality between the models of DDES.

同步算法是分布离散事件仿真中确保模型之间发生事件的因果关系正确性的机制。

Generally, it is difficult to obtain analytical solutions of DDEs, so many scholars pay their attention to numerical analysis for DDEs.

由于其解析解在大多数情形难以获得，因此延迟微分方程的数值分析研究近年已引起学者们的广泛关注。

Linear multi-step method, θ-method, and Runge-Kutta method are effectively numerical methods for solving DDEs and NDDEs.

我们知道，求解各类延迟微分方程，线性多步法，θ-方法和Runge-Kutta方法都是非常有效和常用的方法。

DDES uses the distributed framework, many probes cooperate to analyze and process in order to enhance processing performance.

它采用分布式的结构，多个探测子节点协同分析处理以提高处理性能；

Also, DDEs can interdict the attack sources working in network edge service in the same time.

同时配合网络边缘设备对攻击源实施阻断。

In general, the exact solutions can be given only for few DDEs.

一般情况下，只有极少数延迟微分方程能够获得精确解的解析表达式。

This paper deals with numerical methods and theoretical analysis for delay differential equations ( DDEs).

本论文主要研究延迟微分方程的数值方法，并进行理论分析。

Study of purification of musk DDHI product

麝香DDHI产品提纯工艺的研究

This experimental study on the following film crystallization process is carried out by using a binary system of DDHI.

采用DDHI物系对新型高效降膜结晶技术的分离提纯机制进行了实验研究；

Purification of artificial musk DDHI by combined vacuum distillation melt crystallization technology

减压精馏-熔融结晶耦合装置提纯人造麝香的研究

The Method of Gas Chromatographic Analysis of DDHI

羟基茚满麝香（DDHI）的气相色谱分析方法

Methods The sera of schistosomiasis cattle, negative control cattle and fascioliasis cattle were detected with DDIA and compared with COPT.

以确定的最适条件对血吸虫病牛、阴性对照牛和肝片形吸虫病牛的血清进行检测并和环卵沉淀试验（COPT）检测结果进行比较。

Objective To evaluate the application value of the Dipstick Dye Immuno assay ( DDIA) kit for detecting schistosomiasis in the field.

目的进一步评价胶体染料试纸条免疫诊断试剂盒（DDIA）诊断血吸虫病的现场应用价值。