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Third, they should support good quality of service, which can make the transition of real-time multimedia traffic from application level to carrier grade smoothly.
第三,路由交换设备必须能够提供良好的服务质量保障,使得网络实时多媒体业务从应用级平稳过渡到运营级。
The catalyst comprises the following components: vanadium element, transition metal M and carrier.
该催化剂包括以下组分:钒元素、过渡金属元素M和载体。
The active component(e. g. salts and oxides of transition metals)of many catalysts will disperse spontaneously onto the surface of the carrier.
许多催化剂的活性组分可在载体表面自发分散。
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