There are two main classes, Type I and Type II.
超新星有两类：I型和II型。
The main classes are RootDocs that contain the parse tree.
主要的类是包含解析树的RootDoc 。
Figure 11 shows the main classes and methods for profiling.
图11显示了用于概要分析的主要类和方法。
The two main classes of petrochemicals are olefins and aromatics.
石化的两类主要产品是烯烃和芳烃。
Figure 4: the main classes of the decision-table-based testing library.
图4：基于决策表测试库的主类。
Those problems fell naturally into several main classes.
这些问题可自然地分为几大类。
Fatty acids can be divided roughly into two main classes.
脂肪酸可粗略地分为两大类。
The two main classes are RNA viruses (see retrovirus) and DNA viruses.
主要的二类是核糖核酸病毒和去氧核糖核酸病毒。
The main classes of materials are metals, polymers, ceramics, and composites.
材料的主要分类为金属、高聚物，陶瓷，及合成材料。
Multi-sensor data fusion has two main classes: estimation fusion, decision fusion.
多传感器数据融合分两大类：估计融合，决策融合。
The main classes that support transliteration capabilities are Transliterator and Normalizer.
支持音译功能的主要类是 Transliterator和Normalizer。
The blue boxes in Figure 1 below show the main classes or entities that are implemented by the XMS API interface.
下面的图1中的蓝框显示了XMSAPI接口实现的主要类或实体。
Three main classes of software all require GPT support: the kernel, the boot loader, and low-level disk utilities.
有三类主要的软件需要GPT支持：内核、引导装载程序和低级别磁盘工具。
Roughly, visual tracking algorithms can be divided into two main classes: deterministic tracking and stochastic tracking.
视觉跟踪算法主要分为两大类：确定性算法和随机性算法。
I devoted this month's Working XML to analyzing the HC system, researching algorithms, and designing the main classes and packages.
我在本月的“使用XML”专栏中专门分析了HC系统，并研究了算法和设计了主要的类和包。
The curriculums of skill training, fine arts theory and the specialty practice are the main classes of Chinese higher fine arts specialty.
技巧训练课程、美术理论课程、专业实践课程，是我国高等美术专业的主干课程。
The analysis model identifies the main classes in the system and contains a set of use case realizations that describe how the system will be built.
分析模型确定出系统中的主要类，并且包含一组描述系统如何构建的用例实现。
There are two main classes of antidepressant used for treating cataplexy - the Tricyclic antidepressants and the Selective Serotonin Reuptake Inhibitors.
主要有两种类别的抗抑郁药用于治疗猝倒-三环抗抑郁药和选择性血清素再吸收抑制剂。
Of the non-periodical publications, books constitute by far the largest class; Periodical publications divide further into two main classes, newspapers and magazines.
在不定期出版物中，图书目前占了最大比例；定期出版物又再分两大类：报纸和刊物。
By far, association rule mining algorithms can be divided into two main classes: width first and depth first. There are classical and efficient algorithms in each class.
目前关联规则挖掘算法可以分为广度优先算法和深度优先算法两大类，每类都有经典高效的算法提出。
R. may be classified into two main classes, namely: decision theory method and syntactic (structural) method, the later may still be classified into trivial and stochastic methods.
模式识别的方法可以分为决策理论法和文法结构法两大类，而后者又可区分为一般的及随机的文法识别法。
R. may be classified into two main classes, namely: decision theory method and syntactic (structural) method, the later may still be classified into trivial and stochastic methods.
模式识别的方法可以分为决策理论法和文法结构法两大类，而后者又可区分为一般的及随机的文法识别法。
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