详细讨论和包含多种结构体声明的实例，参见 类和结构体(Classes and Structures) 一节。 结构体可以包含任意数量的协议，但是不能继承自类，枚举或者其他结构体。
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事件被用在类和结构体上，用处是通知某些对象——这些通知事件某些对象的状态有可能被事件的发生所影响。
Events are used on classes and structs to notify objects of occurrences that may affect their state.
重点介绍了按金相组织分类的贝氏体、马氏体类合金结构钢和铁素体、马氏体、奥氏体类不锈钢合金焊丝的生产工艺。
It mainly introduces the production processes of alloy structural steel welding wires of bainite and martensite and stainless steel welding wires of ferrite, martensite and austenite.
按照结构和载体的不同该种传感器分为两类：棱镜表面等离子体波传感器传感器和光纤表面等离子体波传感器，本文分别对它们进行了研究。
According to the difference of the configuration and substrate of SPWS, two different Surface Plasma Wave sensors exit, such as prism SPWS and optical fiber SPWS, which are studied in the paper.
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