单词	一次试验
释义	一次试验 single test
随便看	principalness principal net of the flow principal network Principal Network CCDS principal neutral point principal nilpotent element principal nipotent element principal norm principal normal principal normal bundle principal normal complex principal normal form principal normal plane principal normal section principal normal surfaces Principal Normal Surfaces of Curves principal normal vector principal note principal nuclear facility principal number Principal Nursing Officer principal nutation principal object plane principal object point principal obligation