图解符号 meaning in English

diagrammatical symbol
graphical symbols

Railway rolling stock . fluid power systems . graphic symbols
铁路车辆.流体动力系统.图解符号
Fixed railway equipment . schematic symbols for signalling programmes
铁路固定设备.信号程序用图解符号
Visual display performance marine technology - part 2 : graphical symbols
图象显示性能.海运技术.第2部分:图解符号
Fluid power systems and components . graphic symbols and circuit diagrams . part 1 : graphic symbols
流体动力系统和部件.图解符号和电路图.第1部分:图解符号