overflow earth-rock dam
... 沥青混凝土面板土石坝 asphaltic concrete facing earth-rock dam 溢流土石坝 overflow earth-rock dam 钢筋混泥土面板堆石坝 reinforced concrete facing rockfill dam ...
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过水土石坝的关键在于溢流面的防冲保护。
The crucial part of overflow earth dike is erosion prevention for flowing surface.
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