 |
| |||
| 经济分析期在工程的经济寿命期内，选定一个有足够长度的、能使各比较方案的有利和不利的经济效果能够充分显示出来并达到稳定的程度，从而使各方案之间可进行合理经济比较的期限 | |||
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips