... 自流溢流堰 free fall weir 自同溢流堰 weir with free fall 自由溢流堰 free fall weir; free weir; uncontrolled weir; weir with a free fall ...
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free fall weir 自两溢吝 ; 自流式溢流堰
free discharge weir 自由流堰
Weir free 不束缩堰
weir with free fall 自流式溢流堰 ; 自同溢流堰
weir with a free fall 自由溢流堰
free-flow rectangular overflow weir 自由出流矩形薄壁堰
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