上下文在消息3中被引用，由它指定与实际的服务应用程序相关的任何动作。
This context is then referenced in message 3, which specifies whatever action is associated with the actual service application.
具有结构简单、体积小、动作快、经济和操作方便等优点，在实际电子测量中有着广泛的应用前景。
Simple structure, small size, the fast, economic and convenient operation, the actual measurement has a wide range of electronic applications.
相信所做的这些工作对甚低码率视频图像编码的实际应用和推广将起到推动作用。
Therefore what has been studied should be a promotion to make very low bit rate video coding work in practice and in wide use.
实际应用结果表明，它们对于加氢装置的实验、设计、改造及操作都可起到推动作用。
Practical results showed that, the softwares can promote the experiment, design, revamping and operating etc. of hydrogenation units.
实际应用结果表明，它们对于加氢装置的实验、设计、改造及操作都可起到推动作用。
Practical results showed that, the softwares can promote the experiment, design, revamping and operating etc. of hydrogenation units.
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