culvert opening 中文意思是什麼
culvert opening
解釋
涵洞孔-
The operation measures for controlling over - filling ( over - emptying ) are feasible ; the hoisting loads of valve and miter gate are less than their design values respectively ; but, there exists cavitation phenomenon needed to pay attention to the first crossover culvert when the value is near and after whole opening
控制超灌（泄）操作方式可行；閥門、人字門啟閉力均小於設計值；閥門接近全開至全開后，輸水廊道第一分流口有空化現象。
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