According to this logic, the way to increase efficiency end drive down unit costs is to limit product variety and produce a standardized product in large volumes.
据此逻辑，提高效率而压缩单位成本的方法就是限定产品种类，并且进行标准化批量生产。
2
Some properties allow you to enter free text, but others provide a more appropriate interface; the property for the layout manages USES a drop-down list to limit you to valid layout managers.