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有些工程问题条件复杂,数量关系隐蔽,用一般方法解比较困难。如果用比例法的思路去思考,就会比较容易。下面举几例以抛砖引玉。【例1】加工一批零件,甲单独做需要15小时,乙单独做需要25小时。如果甲、乙两人向时加工,完成任务时,甲比乙多加工150个。问这批零件有多少个?【分析与解】这是一道较复杂的工程问题。我们不妨用比例的思路去分析思考:根据甲、乙两人加工时间相同,可见加工零件数与加工零件的效率成正比例关
Some engineering problems are complicated in terms of conditions and the relationship between them is subtle, and it is difficult to solve them in a general way. If you use the idea of proportional method to think, it will be easier. Here are a few examples to start with. [Example 1] Processing a batch of parts, A alone need to do 15 hours, B alone need 25 hours. If A, B two to the time processing, to complete the task, A more than 150 processing B. Ask how many of these parts? [Analysis and Settlement] This is a more complex engineering issues. We may wish to use the idea of proportioning to analyze and think: According to A, B two processing time is the same, we can see that the number of parts processed and the efficiency of processing parts is proportional to the