... 明槽水轮机 open flume water turbine 开敞水槽 open flumes 活蓖炉 open grate ...
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These canals are frequently excavated through rock, and require tunnels, flumes, syphons, aqueducts and open concrete-lined channels.
这些水渠往往要凿通岩石，并需要地道、引水沟、弯管、渡漕和混凝土水道。
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