利用重磅圖紙所繪制的原圖,須通过清繪,然后再进行描繪,在原圖清繪圖名时,每張要用鉛笔現画字格,安排字架,不但耗費时間較大,而且很难写的统一,特别不能写圖名的同志更感困难。採用模繪法先將圖名写在透明紙上,使用 The original drawings drawn using heavy drawings must be cleared and then described. When clearing the drawing names on the original drawings, each drawing should be written with a pencil, and the word frame should be arranged. This will not only take a long time, but also It is difficult to write unification, and it is even more difficult for comrades who cannot write map names in particular. Write the name of the figure on transparent paper using the method of drawing.