Also, column names can be inherited more easily from set operators such as UNION.
另外，可以更轻松地从集合操作符(比如union)继承列名称。
May set up and program machine tools for use by machining tool operators.
可为模具操作员应用的机床设置和编写程序。
May set up and program machine tools for use by machining tool operators.
可为模具操作员应用的机床设置和编写程序。
应用推荐