Far from being quiet, the ocean is filled with the chogh of animal noise that can even disrupt the sonic transmition of the submarines.
海洋其实并不宁静，她充斥着各种动物发出的噪音，这些噪音甚至会干扰到潜艇的声纳信号的运作。
On this condition, the paper put forward a new electric wave transmition model in the microcell , which based on ray tracing method of Virtual Fountain Tree.
在总结前人工作的基础上，本文提出了一种新的基于“虚拟源树”射线跟踪技术的微蜂窝小区的电波传播模型。
M1 and M2 indirectly effect the stock market through GDP but no transmition mechanism is formed stock market is a weakly exogenous variable in the cointegration vector.
M2均通过GDP对股市产生间接影响，但没有形成利率传导机制，我国股市是关于协整向量的弱外生变量。
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