Networks service object was managed, and the field bus equipments were visited with public target layer. The inter-operation among different equipments was realized with component layer.
公共对象层管理网络服务对象,访问现场总线设备,元件层实现不同现场设备间的互操作。
One of the fundamental contents of priority for public transport is to optimize the bus network, it is the basis for developing the public transport system service level and competition.
优先发展公共交通的一个重要内容是优化公交线网,线网的优化是提高公交系统服务水平,提升公交竞争力的基础。
We only have a skeleton bus service on public holidays.
在公众假期,只有最少量的公共汽车营运。
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