Building the model and utility class.
构建模型和实用程序类。
A nice utility class for quick manipulations.
这是一个很好的工具类，用于快速操作。
You also need a utility class for creating appropriate URLs in your feed.
您还需要使用一个实用类在提要中创建相应的URL。
Next, policy and signature are generated with the utility class we built.
接下来，我们所创建的工具类会创建策略和签名。
Create data classes and a utility class for getting an EntityManager instance.
创建数据类和一个实用类来获取EntityManager实例。
The utility model discloses a pen rack for drawing, belonging to a stationery class.
绘图笔架这一实用新型属于文具类。
The utility model belongs to the machine tool equipment class.
本实用新型属于机床设备类。
The utility model relates to a machine which belongs to the class of metal cutting.
本实用新型属于金属切削类机械。
The utility model relates to a machine which belongs to the class of metal cutting.
本实用新型属于金属切削类机械。
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