对于初学管工的同志来说,识图是个难点,难在不知从何入手。说难其实不难,只要掌握了技巧就能看懂图纸。(1)熟悉图例。按实物外形绘制的图形称为图例,如“■”表示截止阀等。管道图中的设备布置图是较为常见的图 For comrades who work as a beginner, it is a difficult task to identify a figure, and it is difficult to start with it without knowing it. Hard to say that is not difficult, as long as the master skills can understand the drawings. (1) familiar with the legend. Pictured according to the physical shape is called a legend, such as “■ ” said the globe and so on. The plant layout in the pipeline diagram is the more common figure