IEC 60194-1:20 21涵盖了与TC91技术密切相关的术语和定义。 本文件与IEC 60194-2:20 17一起取消并取代IEC 60194:2015。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更: 1）排除其他TC更好服务的32个一般术语； 2）排除电子组装行业不再使用的47个术语； 3)包括14个与器件嵌入基板技术相关的新术语； 4）包括113个同义术语； 5）删除术语和附件的识别码。

IEC 60194-1:2021 covers terms and definitions closely related with TC91 technology.
This document, together with IEC 60194-2:2017, cancel and replace IEC 60194:2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
1) exclusion of 32 general terms better served by other TCs;
2) exclusion of 47 terms no longer used by the electronic assembly industry;
3) inclusion of 14 new terms related with device embedded substrate technology;
4) inclusion of 113 synonymous terms;
5) removal of identification codes for terms and annexes.