中小学数字工具书功能要求
Functional requirements of digital reference books for primary and secondary school
2017-11-03
BS ISO 20415-2019
Trusted mobile e-document framework. Requirements, functionality and criteria for ensuring reliable and safe mobile e-business
可信移动电子文档框架 确保可靠和安全移动电子商务的要求、功能和标准
2019-10-22
ISO 20415-2019
Trusted mobile e-document framework — Requirements, functionality and criteria for ensuring reliable and safe mobile e-business
可信移动电子文档框架.确保可靠和安全移动电子商务的要求、功能和标准