upper lock meaning in Chinese
上船闸
上游船闸
Examples
- In combination with the construction practice of xinba lock , this paper introduces culvert construction of tile lock ' s upper lock head and preventive measures for cracks
摘要通过新坝船闸施工实践，介绍了船闸上闸首输水廊道施工及预防裂缝产生所采取的措施。