英语词汇“pencil beam”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	pencil beam
释义	pencil beam pencil beam A searchlight beam reduced to, or set at, its minimum width. pencil beam pencil beam See antenna. pencil beam [′pen·səl ‚bēm] (electromagnetism) A beam of radiant energy concentrated in an approximately conical or cylindrical portion of space of relatively small diameter; this type of beam is used for many revolving navigational lights and radar beams. pencil beam An electronic beam that is narrow, has minimal side lobes, and is strongly directional.
随便看	isopters isoptic isoptin isoptin sr isopto carbachol isopto carpine isopto-carpine isopto tears isopulegol isopulse system isopycnal isopycnic isopycnic level isopycnic zone isopygous isopyknic isopyknosis isopyrocalciferol isopyrum isopyrum biternatum isopyrums isoqol isoquality testing isoquant isoquant curve

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