qualifying symbol meaning in English

限定符号

Graphical symbols for diagrams - part 2 : symbol elements , qualifying symbols and other symbols having general application
图示用图形符号.第2部分:符号要素限定符号和其它一般应用符号
Graphical symbols for electrical diagrams - part 2 symbol elements , qualifying symbols and other symbols having general application
电气简图用图形符号第2部分：符号要素限定符号和其他常用符号
Graphical symbols for diagrams - part 2 : symbol elements , qualifying symbols and other symbols having general application iec 60617 - 2 : 1996 ; german version en 60617 - 2 : 1996
线图图形符号.第2部分:常用符号要素标识符和其它符