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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.
微带线和波导是两种重要的微波传输线，在微波领域有着十分广泛的应用。
Mircrostrip and waveguide are two important kinds of microwave transmission line which are widely used in microwave area.
波导是一种低损耗的传输线。
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