同时也显示出，该结果的背离不仅仅是线性损耗系数的简单叠加，特别是在长久光纤系统中存在同轴信号放大器的情况下。
It has also been shown that this deviation is more than just addition of linear loss coefficient especially when long haul fiber optic systems with inline amplifiers are considered.
同轴电缆越长，信号强度越弱。
The longer the coaxial cable has to run, the weaker the signal.
信号传输线(一个同轴波导管)贯穿整个塔身，通过它，信号从传输器运送到塔尖的天线。
The entire length of the tower is equipped with a feeder (a coaxial wave-guide) through which signals are transmitted from the transmitter to the antenna on the spire.
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