blank detail specification is a supplementary document to the general specification, which includes requirements for the format, layout and at least the content of the detail specification. A detailed specification that does not comply with these requirements shall not be considered to be an IEC specification, nor shall it be called an IEC specification.
GB/T 7154.3-2003 history
2003GB/T 7154.1-2003 Directly heated positive step-function temperature coefficient thermistors-Part 1-1:Blank detail specification for current limiting application--Assessment level EZ