此理论将声场表示成各种表面弹性波-环绕波的再辐射的叠加，从波动的角度揭示声-振耦合机理。
The theory expresses the sound fields by a superposition of various surface elastic waves-circumferential waves and reveal the vibro-acoustic coupling mechanism in viewpoint of wave.
但是可能因为主体建筑损毁严重，或者辐射量大等，已经无法再和电力系统比较容易的连接上。
The main reactor buildings are either too badly damaged, or too laden with radioactivity, to readily reconnect plumbing and electrical systems.
中心辐射(hub - and - spoke)表示一种典型的美国空中客运模式：乘客在大型的中心机场(hub)之间被运送，然后再转机前往靠近目的地的支线机场。
Hub-and-spoke refers to the typically US model of passengers being processed through large "hub" airports and then on to secondary flights to "spoke" airports near their final destination.
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