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单词
billboard array
释义
billboard array
billboard array
[
′bil‚bȯrd ə′rā
]
(electromagnetism)
A broadside antenna array consisting of stacked dipoles spaced one-fourth to three-fourths wavelength apart in front of a large sheet-metal reflector. Also known as bedspring array; mattress array.
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更新时间:2026/7/17 1:57:39