class D丁类classn.等级；阶级；阶层；班级；课；[生]纲；<口>出色的风度v.分类classified attribute分类性定语classless addressing无类地址分配classified catalogue分类目录class solidification阶层固化class-for-itselfn.自为的阶级class teaching style班级授课制class/gang warfare阶级/帮派斗争classified raster map分类图class C amplification丙类放大classified efficiency分级效率