overflow valley 中文意思是什麼
overflow valley
解釋
泛濫河谷-
The studies may indicate that an earthfill dam with a center concrete gravity overflow spillway section is the most economical, in a wide flat valley.
方案表明,在寬闊而平坦的河谷內,一種在中間段設置混凝土重試溢洪道的土壩是最經濟的。
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