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.
一些试验表明，符号位水平迭加方法强调反射波的相干程度，因而在剖面上突出了弱反射波。
Some experiments show that the sign bit horizontal stack method emphasizes the coherence of reflections, thus weak reflections on the section are enhanced.
一些试验表明，符号位水平迭加方法强调反射波的相干程度，因而在剖面上突出了弱反射波。
Some experiments show that the sign bit horizontal stack method emphasizes the coherence of reflections, thus weak reflections on the section are enhanced.
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