front porch
短语[电] 前廊
词形变化
front porches
复数
front porches
释义与例句
n.
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1.
A porch at the front of a building.
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2.
A brief period inserted between the end of each transmitted line of picture and the leading edge of the next line sync pulse, intended to allow voltage levels to stabilise in older televisions, preventing interference between picture lines.
媒体