“director-sight system”的概念、定义、翻译、参考文献-科学参考

单词	director-sight system
释义	director-sight system [dǝ`rek·tǝr ´sīt ´sis·tǝm] ^ORDNANCE A sighting system used on airborne flexible guns in which the gunner has direct control of the tracking line (line of aim) and indirect control of the gun or guns.
随便看	sky radiation skyscraper sky wave sky-wave correction sky-wave-synchronized loran sky-wave transmission delay slab slabbing cutter slabbing machine slabbing method slabbing mill slab cutter slab entry slab jointing slab oil slab pahoehoe slabstone slack slack barrel slack ice slackline cableway slack quenching slack time slack water slack wax

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