| 1 | Laser microwave applicable to such culvert. | |
| 2 | After days of hard work, the culvert was at last completed. | |
| 3 | The highway engineering culverts general use of the reinforced concrete production. | |
| 4 | Water transportation and sand movement characters in the shaft double layer culvert are studied in this article. | |
| 5 | This paper explores the problem arisen out of road culvert project reconnaissance in the view of geology. |