Part 2 of this series covers more best practices in constructing a data model by leveraging polymorphism with Hibernate, other useful features of a generic DAO, and performance tuning the data model.
本系列的第2部分进一步讨论构造数据模型方面的最佳实践，包括利用Hibernate的多态性、泛型DAO的其他有用特性以及数据模型的性能调优。
The design prineiple, special features, and performance of Model CBS-3E dynamic displacement instrument and associated measurement system are described in this paper.
本文叙述了CBS-3E型动态数字位移测量仪和测量系统的设计、特点及性能。
The technical performance parameters, design features and multiple advance techniques adopted in model WD120 derrick crane are presented.
重点介绍WD120型桅杆式起重机的技术性能参数、构造特点及采用的多项先进技术。
The principal dimentions, parameters, performance, and structural features of the Jiang Nan model HN710 minicar are outlined in this paper.
介绍了江南牌HN710型超微型汽车的主要尺寸、参数、性能及结构特点。
The features of important progress of large container ship are presented in the paper. A model for analyzing the overall technical and economic performance of large container ship is proposed.
本文介绍了大型集装箱船的特点和主要进展，提出了大型集装箱船技术经济性能综合评价模型。
Test results have shown CPES has good features and performance as a real-time blackboard model testbed.
测试结果反映出CPES具有较好的实时黑板模型试验床的性能和功能。
Introduced are its construction, performance, measurement and control system, automatic data acquisition and processing system, test results of calibration model and analysis, features and USES.
文中介绍了风洞的结构、性能、测量控制系统、自动数据采集和处理系统以及标模实验结果，分析了风洞的特点和用途。
The results show that this model features convenient calculations, high distinguish efficiency and high stability, and can be extended to other weapon systems' performance evaluation.
计算实例的结果表明，该模型计算简捷、分辨程度较高、稳定性也好，可将其推广到其它武器系统性能评估应用中。
The design and development features, structure and key technical indexes of model KCO-1 CO Monitor are described in this paper. The performance test and test results are presented as well.
介绍了KCO - 1型一氧化碳检测报警仪的设计研制特点、结构、主要技术指标和性能试验情况及效果。
Ultrasonic Motor (USM) has excellent performance and many useful features, however, its mathematical model has strong non-linearity and time-variety to make precise position servo very difficult.
超声波电机是一种新型的电机，它有许多电磁电机无法比拟的优点，但它的数学模型的强非线性和时变性，使高精度的位置定位非常困难。
Ultrasonic Motor (USM) has excellent performance and many useful features, however, its mathematical model has strong non-linearity and time-variety to make precise position servo very difficult.
超声波电机是一种新型的电机，它有许多电磁电机无法比拟的优点，但它的数学模型的强非线性和时变性，使高精度的位置定位非常困难。
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