基本解釋[數(shù)學(xué)]類的零集英漢例句雙語例句Also, many times member variables of a class that point to other classes simply need to be set to null at the appropriate time.此外，您常常需要在適儅的時(shí)候?qū)⒅笗谄渌惖念惓蓡T變量設(shè)置爲(wèi) null。null set of class更多例句詞組短語短語null set of class nf NF 類零集null set of class更多詞組專業(yè)釋義數(shù)學(xué)類的零集