什么是系统工程（字幕）14
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前面怎么在这个
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这个流上面，这个连接这条线上面给它加个点（口误：冒号）
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这个
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我也不知道怎么做
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但是
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更好的做法应该是什么
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应该是在这个上面定义端口
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这不应该加点（口误：冒号）
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应该定义端口
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那我们来画一个
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跟这个不是完全一样
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但是能够表达它一样的意思的
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怎么画，你看
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来画一下
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这个就先删掉
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删掉它
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这里
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往上面加一个端口
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这端口的名字叫什么
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就叫污水，对吧
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因为它是污水嘛
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污水出来，对吧
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水源，污水出来
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污水
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好
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然后，右键点这个端口
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你看
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我们这里，设置这个
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这个端口的这个属性的类型
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这里就选这个水
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对吧
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水
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这好像它用的是化学方程式H2O
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我们也照着做
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也就是说，这个不叫水
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我们改个名叫
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H2O
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对
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你看，这里
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改完
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这里就改了
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对吧
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这是污水了
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那同样的，这里加一个
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端口上去，对吧
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那这个我们叫
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也是污水
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因为污水出来
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污水进去嘛
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污水
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然后呢
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这个
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同样类型也是
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H2O
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然后这样画过来
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这样画过来
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然后选这个
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然后，添加，这上面还得加水那个类型
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添加这个
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好
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箭头就出来了
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对吧
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箭头出来
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过来一点
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我画出来，效果是这样
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这样的效果
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那其他一样的
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我们来画一下
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这个是
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出来是净水嘛
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点错
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净水
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好
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这个
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上来，净水
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这两个类型一样的，都是
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水
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画过来
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水
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这样
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点错
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那怎么把这个
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构造型去掉
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如果去掉，右键点这个就行
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右键点这个图的空白地方
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Properties这里
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然后元素这里把这个
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显示元素构造型这个去掉
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这样看起来就清爽一点
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对吧
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这张图也可以变小一点
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还有什么
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这个净水出来
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同样的，我们也可以
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净水
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然后呢
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这里画过来，一样的
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这也是有一个端口
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净水
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也同样
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是水
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画下来
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这样
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那么
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热源这里
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它向它供热
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那同样，我们这里
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热源
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这是
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就不要字了
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供热这个
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就不要字了
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这个没有什么含义
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因为这个上面还有净水污水
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还有角色的不同
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供热这个就没有什么特别含义
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那我们就把
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那就不用端口就可以
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不用端口就可以
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直接画上来就可以
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直接画上来
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然后这个是热
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这样
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就行了
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对吧
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因为前面提供什么就没有意义了
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热源这里已经有了嘛
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对吧
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端口可以
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不用画都可以