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water return gate
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water return gate
Encyclopedia
农学
农业水土工程
释
water return gate
退水闸
修建在渠道险工段或重要渠系建筑物上游渠侧,用于排泄渠中超量或安全泄空渠水的泄水建筑物。又称泄水闸。
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Flaming Star Nebula
flammability
flammability limit
flammable aerosols
flammable and explosive place
flammable and explosive substances
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flammable liquid identification
Flammarion crater
Flammarion Observatory
flammule
Flamsteed Catalogue
Flamsteed number
flange
flange bolts
flange focal distance
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flanging
flank
Flanker task
flanking
flanking sequence
flanking transmission
flank meristem
flannel
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