交叉连接

• This series can be used in a variety of installations , including the prevention of health hazard cross - connections or for containment at the service line entrance
  这个系列可以采用各种安装方式，包括预防健康危害交叉连接或在维修管线进口进行封堵。
• Abstract : cross connection is inevitable in drinking water lines , so the water pollution caused by counter flow must be prevented as possible for the water quality protection
  文摘:生活饮用水管网必然存在交叉连接，有交叉连接必然存在倒流污染的危险。
• The 995 can be used in a variety of installations , including health hazard cross - connections in internal piping systems and for containment at the service line entrance
  995系列可以用于各种安装，包括用于封堵接户管线进口的内部管线系统中的健康危害交叉连接。
• This series can be utilized in a variety of installations , including health hazard cross - connections in plumbing systems or for containment at the service line entrance
  这种系列可以采用多种安装应用场合，包括管道系统的健康危害交叉连接或维修管道进口处的密封。
• Only those cross - connections identified by local inspection authorities as non - health hazard shall be allowed the use of an approved double check valve assembly
  只有那些经过当地有关检查主管部门认定为非健康危害的交叉连接才应该允许采用经过认证的双止回阀总成。
• Series 909 reduced pressure zone assemblies are designed to provide crossconnection control protection of the potable water supply in accordance with national plumbing codes
  系列909减压区总成具有饮用水供应系统交叉连接管理功能，符合美国国家管道行业的有关规定。
• Abstract : oxc is the key technology in the implementation of all - optical networks . this paper presents an overview of the funcation , architecture and research advances in oxc
  文摘:光交叉连接技术是实现全光网的关键技术。分析了全光网中的光交叉连接的作用、技术特点以及国际上的进展。
• Adopting multi - granularity switching in wdm optical networks can dramatically reduce the size of optical cross - connect , which saves the cost of building and maintaining of networks
  摘要在wdm光网络中引入多粒度交换可以有效地减小交换节点中交叉连接矩阵的规模，从而大大降低网络的成本。