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(1) What is Event BubbleContinuously request the same operation;Teaching Physics with the Principle of Deliberate Practice//300Grandma Lily woke up from her dream and hurriedly went to see Little Charlie nearby. At this time, Little Charlie, her small mouth still sucking and sleeping soundly. It turned out to be a dream. Grandma Lily only recovered for half a day and took a long breath. She looked out of the window-cotton wool-like snow, like dandelion's fluffy seeds, flying in the wind. Then he slowly kissed little Charlie's forehead... … …In the above code, we use three functions, order500, order200, orderNormal to handle its own business logic, If the current own function cannot handle things, We pass it to the following function to handle it. By analogy, Until there is a function that can handle him, Otherwise, the responsibility chain mode will leave the chain directly, telling that it cannot be processed and throwing an error prompt. Although the above code can be used as the responsibility chain mode, we can see from the above code that the Order500 function depends on functions such as Order200, so there must be this function, which also violates the open-closed principle in object-oriented. Let's continue to understand writing flexible and detachable responsibility chain nodes.? The direction of industrial Internet is to build an ecosystem of intelligent manufacturing, which is the subversion of software, network, big data and other service modes in the industrial field. Industrial Internet is to realize the interconnection of all machines, not just the machinery and equipment of manufacturing factories, and finally realize the integration of machines and machines, and the integration of people and machines.(Editor: Yue Quan HN152)