Radial gates control how much water is released and massive concrete blocks at the bottom of the chute, called dentates, disperse the flow to reduce erosion as it crashes into the Feather River.
径向闸门控制释放的水量，滑槽底部的巨大混凝土块（称为齿状）可以分散水流，以减少水流流入羽毛河时的侵蚀。
Radial gate
原声例句
工程学速成课
英语百科
Tainter gate
（重定向自Radial gate）
The Tainter gate is a type of radial arm floodgate used in dams and canal locks to control water flow. It is named for Wisconsin structural engineer Jeremiah Burnham Tainter.
A side view of a Tainter gate resembles a slice of pie with the curved part of the piece facing the source or upper pool of water and the tip pointing toward the destination or lower pool. The curved face or skinplate of the gate takes the form of a wedge section of cylinder. The straight sides of the pie shape, the trunnion arms, extend back from each end of the cylinder section and meet at a trunnion which serves as a pivot point when the gate rotates.