| 摘要 |
An irrigation channel gate uses flexible members which once released use the power of water flow to open and shut the gate. When flow in the channel is desired both an upstream gate and downstream gate are open. To stop flow the upstream gate is released. To reset the gates the down stream gate is closed and the upstream gate is opened. Opening of the downstream gate permits flow again. The gates essentially comprise a main member hinged on a horizontal axis at the base of the channel and flexible side pieces to connect the main member to a central frame.
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