Sweden house usually has a high specification, most have be prepared fully kitchen and excellent hot water supply system.
瑞典的房子一般都有很高的规范，大多数都有有备完全的厨房和极好的热水供水系统。
2
This document is an American Water Works Association (AWWA) standard. It is not a specification.
此文件是美国自来水厂（AWWA）标准，不是规范。
3
Unifying the domestic and foreign research situation, it has analyzed the water thermal power tendering surfer difference and the system design specification and the construction principle.