The isolation at port and port between be differ that in addition to itself circulation state, and yet relate with the reflection-coefficient of external connective load at the three port.
它端口与端口之间的隔离度除与它本身的环行状态有关外，还与第三端口外接负载的反射系数有关。
But for the different positions of isolation layer, the damping effect of the structures also differ very obviously.
但因为隔震层位置的改变，结构的减震效果也产生了很大的变化。
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