sub-class

基本解释

To her surprise, the patient had extremely low levels of one particular sub-class, called IgG2.
检测结果出乎她的意料，病人体内的一个称为IgG2的亚类处于非常低的水平。
Today in Europe there is a new class which is growing apace that has come to be known as the underclass or sub-class.
如今在欧洲一个新阶级正在快速成长，它被称为下层阶级或亚阶级。
The relationship between the class and the sub-class is established through the relevance of the attribute to the fuzzy Glass and the semantic distance between the class and the sub-class.
利用属性与类的相关和类与子类间的语义距离来建立类与子类的关系。同时，讨论了模糊类层次中多重继承的问题。

The year the oldest Ohio-class ballistic-missile sub completes its final nuclear patrol is now expected to be 2027, which sounds a long way off until you realize it takes nearly two decades to design, develop, build and test the lead ship in a successor class.
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And within this class I am specifically refering to the sub-category known as hustlers today.
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