出典:Wiktionary
出典:『Wiktionary』 (2025/12/22 14:14 UTC 版)
From 中期英語 were, from 古期英語 wer, from werian (“to dam up”), from Proto-West Germanic *warjan, from Proto-Germanic *warjaną, from Proto-Indo-European *wer- (“to cover”); Cognate with Old Norse ver (“station for fishing”), Sanskrit वृणोति (vṛṇóti). Related to warranty.
出典:Wikipedia
出典:『Wikipedia』 (2011/06/27 10:22 UTC 版)
A weir (
/ˈwɪər/) is a small overflow dam used to alter the flow characteristics of a river or stream. In most cases weirs take the form of a barrier across the river that causes water to pool behind the structure (not unlike a dam), but allows water to flow over the top. Weirs are commonly used to alter the flow regime of the river, prevent flooding, measure discharge and to help render a river navigable.
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