dry stone pitching
... 干砌石排水沟 French drain ; drystonedrain 干砌石护坡 drystonepitching 干砌石圬工 干砌圬工 laidmasonry ...
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干砌块石护坡 dry pitching
围坝上游干砌石护坡在风浪淘刷下，发生严重塌陷。
The masonry facing of the embankment was destroyed seriously by stormy waves.
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