“directional beacon”的概念、定义、翻译、参考文献-科学参考

单词	directional beacon
释义	directional beacon [dǝ`rek·shǝn·ǝl `bē·kǝn] See <<direction-giving beacon>>
随便看	heartbeat heart block heart bond heartburn heart cam heart failure heart-failure cells hearth hearth furnace hearth roasting heart-lung machine heart murmur heart pacemaker heart rate heartrot heart valve heartwater disease heartwood heart worm heat heat-activated battery heat-affected zone heat balance heat barrier heat budget

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