对一般设计单位来说,工程图的管理大致经历了这样几个时期:第一个时期,工程图经专业人员绘制完成后,晒出蓝图,底图和蓝图交档案处分类编号后存放于档案处的库房里。日积月累,库房越来越大,如果调用则需到档案处签字、索引、取图。第二个时期,是国内采用不太多的微缩片。相对第一个时期,库房面积大大缩小,但要调用图时依然相当麻烦。第三个时期,是计算机化时期,对用CAD软件制的图,存储自然不成问题,但对 For the general design unit, the drawing management generally goes through several periods as follows: In the first period, after the drawing is completed by the professionals, the drawing is drafted out of the blueprint, the bottom drawing and the blueprint are sorted into numbers and stored in the file In the warehouse. Over time, the warehouse is getting bigger and bigger, if you need to call the file office to sign, index, take pictures. The second period, the domestic use of not too much microfilm. Relative to the first period, the Treasury area greatly reduced, but still very troublesome to call the map. The third period is the computerized period, the use of CAD software plans, storage is not a problem, but