TV antenna and a telephone line installed in the position for easy maintenance.
电视天线和电话专线要安装在便于维修的位置。
The antenna may maintain its performance throughout a range of position.
这种天线在一定位置范围之内都可以维持其性能。
The goal is to position the antenna to use sharp beam position measurement.
目标方位是利用天线的尖锐方位波束测量。
The goal is to position the antenna to use sharp beam position measurement.
目标方位是利用天线的尖锐方位波束测量。
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