1. 总水门：head for 出发 | head gate 总水门 | head lamp 照明灯

2. 总闸门：head drying 穗萎蔫 | head gate 总闸门 | head on weirs 堰顶水头

3. 运河水闸门：head gasket 汽缸垫 | head gate 运河水闸门 | head gate 运河头闸

4. 运河头闸：head gate 运河水闸门 | head gate 运河头闸 | head gear 船首帆缆装置

noun

1. a gate upstream from a lock or canal that is used to control the flow of water at the upper end

2. regulator consisting of a valve or gate that controls the rate of water flow through a sluice

Synonym: sluicegatesluice valvefloodgatepenstockwater gate