A use case is neither a class specification nor a dataspecification.
用例既不是类规范，也不是数据规范。
2
Consult your chemical manufacturer's dataspecification sheets for their recommended spray temperatures.
有关最佳的喷涂温度，请查阅有关化工品厂商的数据说明书。
3
The spatial dataspecification of EOO and its conversion to GML format is discussed and the data integration result was validated with Fujian Major Highway database as a sample database.