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
class of subscriber用户类别
Class of saturation饱和类
classified analysis聚类分析
class decomposition阶级分解
classified railings分级尾砂
class A signal area强电视信号区
class-c operation[电] C类操作
class of insulation绝缘等级
class encouragement课堂激励
class interval size组距