It is well accepted by both the industrial circles and the academic circles that 4G should be an open network environment-heterogeneous wireless networks ( HWN), which can intelligently integrate the existing and the future radio access systems.

Secondly, we give the parameters needed for interface selection in HWN. It needs a generic valuation function for various parameters, so we propose DWMIS, which can integrate various parameters.

然后，给出了在异构无线网环境下选择最优接口需要考察的参数，多种参数需要一个统一的评价指标，提出了综合各种参数的评价函数和计算方法DWMIS。

Firstly, we analyzed the security threat and requirements in HWN, and introduced the characters, architecture and security authentication method of two wireless networks 3G and wireless LAN ( WLAN).

首先，分析了无线网络存在的安全威胁以及安全需求，介绍了3G和无线局域网两种无线网络的特点、体系结构以及安全认证方法。

In this dissertation, under the guidance of the coordinated radio resource management theory, the problems of access selection and call admission control in HWN are intensively studied.

本论文以异构无线网络为背景，在协同无线资源管理思想的指导下，研究了异构无线网络中的接入选择和准入控制问题。

The simulation results indicate that the analysis expression can accurately describe agent-get problem in HWN.

仿真结果表明该解析表达式能够准确描述无线混合网络中的代理搜索问题。

Vertical handoff is one of important technologies of HWN, which concern multiple research areas.

垂直切换是异构无线网的重要技术，涉及到多方面的研究。

Scheme B in the article, i.e. a method of using the rebuilt used fuel from PWR to replace the natural uranium fuel for HWR, was discussed.

并对如何使用此再制的核燃料提出两种方案，分别适用于压水堆和以天然铀为燃料的坎杜重水堆。

Manufacturing process of CANDU-6 fuel Bundle for HWR nuclear power station

重水堆核电站用CANDU-6型燃料棒束的制造工艺

Failed to update the HWS cache.

无法更新工作流服务缓存。

The update failed due because this fact retriever no longer exists in the HWS system.

更新失败，因为此事实检索器不再存在于工作流服务系统中。

Failed to start the HWS application.

无法启动工作流服务应用程序。

A flag indicating whether the action has been registered with the HWS system.

表明该操作是否已向工作流服务系统注册的标志。

Application of PROFIBUS in the transformation of HWS moulding line

应用PROFIBUS总线改造HWS静压造型线

This account is already trusted by the HWS system.

工作流服务系统已信任该帐户。

The Design of User Interface for the Hypermedia System HWS

多媒介超文本系统HWS的用户界面的设计

Construction of recombinant HVT transferring plasmid vector with fusion gene cassette of NDV F_ ( 48) E_ 9 strain

新城疫病毒F（48）E9株病毒F基因表达盒的火鸡疱疹病毒转移质粒载体构建

Replication of HVT in chicken feather tips containing MDV and effect of its vaccination on MDV antigens detection

免疫鸡MDV感染后羽毛根HVT的分离及HVT免疫对MDV抗原检测的影响

Construction of a recombinant HVT virus expressing the HA gene of avian influenza virus H5N1 via Rde/ ET recombination system

利用Rde/ET技术构建表达H5亚型禽流感病毒HA基因的重组火鸡疱疹病毒

Studies on Standardization of Turkey Herpesvirus Fc 126 Strain for Vaccine Production VI. Stability of HVT Clone Strain and Field Trial

鸡马立克火鸡疱疹病毒（Fc-126株）的标准化研究VI.HVT克隆株的稳定性、保存期测定及田间试验效果

Please advise HVT and give your reasons.

请为HVT公司提出处理意见，并给出理由。

HVT delivered and lost control of the goods but did not get paid.

这样，HVT公司不仅交付了货物，而且对货物失去了控制，但却没有得到货款。