如果许多可伸缩天线附着在微型无线电收音机上面，并且放置于大桥内部，它们就会随着桥相应地伸展或收缩，这样就会经常性的自我调谐。
If lots of flexible antennas attached to small radios were placed inside a bridge, they would expand or contract along with the bridge and so would constantly retune themselves.
电磁干扰以多种方式存在于汽车内部，这些干扰对车载电子装置及无线电接收设备会产生不同程度的影响。
The electromagnetic interference exists in the automobile with the different kinds. The interference has the varying degree influence on the vehicle electronic device and the radio receiver.
对所有设施，特别是对大型就业机会，双向无线电对讲机或内部电话线应采用，以确保正确的号码插座和配线架，在测试中。
On all installations, and particularly on large jobs, two way radios or internal telephone lines should be used to ensure correct numbering of outlets and patch panels during testing.
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