Graphical symbols for resistance welding equipment.
电阻焊接设备的图形符号
Graphical symbols for diagrams. Part 9 : telecommunications : switching and peripheral equipment.
设计图的图形符号.第9部分:电信:开关和外部设备
Equipment for fire protection and fire fighting. Graphical symbols for fire protection plans. Specification.
消防设备.防火平面图的图形符号.规范
Graphical symbols for diagrams. Part 10 : architectural and topographical installation plans and diagrams.
图解用图形符号.第10部分:建筑结构和地形安装平面图和设计图
Fixed railway equipment. Graphical symbols for electric traction installations.
铁路固定设备.电力牵引装置的图形符号
Graphical symbols for diagrams. Part 10 : telecommunications : transmission.
设计图的图形符号.第10部分:电信:传送
Graphical symbols - Test methods for judged comprehensibility and for comprehension.
图形符号.用于判断和理解的试验方法