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单词
radio horizon
释义
WordReference Random House Unabridged Dictionary of American English © 2024
ra
′
dio hori′zon,
Telecommunications
the locus of points on the earth's surface where rays from a transmitting antenna are tangent to the surface. The radio horizon for a fixed antenna varies with refraction by the atmosphere of radio waves.
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更新时间:2025/7/25 17:27:09