precision cod精测距码precisionn.精确；精密度adj.精确的precision internal grinder精密内圆磨床precision machinery design精密机械设计precision turntable system精密转台系统precision electrical meter精密电表precision minimum altitude用精密进场雷达进场着陆的最低高度precision land-levelling土地精细平整precision photolithography精密光刻precision high speed lathe精密高速车床precision graphic recorder精密图形记录器precision of laser ranging激光测距精度