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书写头 射束 铅笔 光锥 毛撮
pencil  detail>>
铅笔记录头写头光束射束
pencil  detail>>
灯光锥形射束
cone of light coneoflight  detail>>
铅笔书写纸
lead pencil paper lead-pencil paper  detail>>
铅笔形射束
pencil beam  detail>>
毛撮
tuft  detail>>
玻璃书写铅笔
glass pencil  detail>>
写头
pencil write head writing head  detail>>
铅笔书写复写纸
pencil carbon paper  detail>>
光锥
light cone ◇光锥代数 light cone algebra; 光锥展开 light-cone expansion  detail>>
铅笔
pencil  短语和例子   半硬铅笔 medium pencil; 彩色铅笔 coloured pencil; crayon; 软铅笔 soft penci...  detail>>
读写头
combined head optical head pickup head read-record head read-write head rwh...  detail>>
书写
write  短语和例子   在纸的反正面书写 write on both sides of the paper; 这支钢笔书写流畅。 the pen writ...  detail>>
射束
[电学] beam  短语和例子   未按无线电射束飞行(脱离航线) off the beam    detail>>
机头射击员
nose gunner  detail>>
光点, 光锥
light spot  detail>>
光锥体
cone of light  detail>>
抛光锥
buffing cone polishing cone  detail>>