剖面符号与机件的材料有关，下表是国标规定常用材料的剖面符号。
The symbols used to distinguish between different materials in sections as shown in following table.
填充图剖面符号是机械制图、建筑制图中实体剖视图必不可少的材料标识。
The cross-section symbol of the pattern fill is a necessary material marker for the cross-sectional view of the solid object.
在不致引起误解的情况下，机件图中的移出断面允许省略剖面符号，但剖切位置和断面图的标注必须遵照原来的规定，如图15所示。
Removed cuts can be omitted the sectional symbol, but the labeling of cutting position and cut views should be fit the rules as shown in Fig. 15.
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