单词	虛歲
释义	虛歲1. nominal age
随便看	once-over-lightly once per revolution vibration oncer once-reflected once-reflected beam once-reflected--beam once removed once round oncers once rub onces once that once-through once-through boiler once-through boiler, mono-tube boiler once-through boiler,mono-tube boiler once-through conversion once-through coolant once-through coolant system once-through cooling once-through--cooling once-through cooling water system once-through cracking once-through design once-through flowsheet