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预应力钢筒混凝土管
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预应力钢筒混凝土管
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prestressed concrete cylinder pipe
预应力钢筒混凝土管
在带钢筒的混凝土管芯上缠绕环向预应力高强钢丝,并喷涂水泥砂浆保护层而制成的新型复合管道结构。简称PCCP。
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agricultural policy instrument
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agricultural producers’cooperative
agricultural producers’mutual aid team
agricultural product circulation policy
agricultural product cost statistics
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agricultural production technology system
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agricultural product price subsidy policy
agricultural product price survey system
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agricultural products detection
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agricultural products fair price supermarket
agricultural products logistics distribution center
agricultural products market
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更新时间:2026/6/22 3:34:55