现在对日开发中很流行的非机能要件定义说明。只是对机能部分作估算已经不能满足项目要求，会出现很高的风险，所以日本IT机构很多家大公司联合制定了这个标准。这是一个列表。-Japan is now developing a very popular non-functional elements of the definition descr iption. Only part of the function for can no longer meet the project requirements Gusuan will appear very high risk, so many big Japanese IT sector, co-developed the standard.