“boundary marker”的概念、定义、翻译、参考文献-科学参考

单词	boundary marker
释义	boundary marker [`bau̇n·drē ´mär·kǝr] ^NAVIGATION A radio transmitter operating at 75 megahertz and installed near the approach end of landing runway (3.9 nautical miles ± 1000 feet, or 7123 ± 305 meters) and approximately on the localizer course line.
随便看	peel-off time peel test peel thrust peen peening peepdoor peephole masks peep sight peep slot peer peer-to-peer network peesweep storm peg Pegasidae Pegasiformes Pegasus peg count meter pegging rammer peg graft pegmatite pegmatitic stage pegmatitization pegmatoid pegmatolite peg model

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