以下为句子列表：
英文: Based on the technical summaries of some long-distance water delivery projects, the technical problems from the selection of pipes, water hammer protection and the safety measures, economic flow velocity, economic pipe size and some other technical proble
中文: 摘要通过对多项长距离输水工程设计的技术总结，论述在南水北调河北省配套输水管道工程设计中对管材的选择、水锤的防护技术与安全措施、经济流速的计算、经济管径选择等技术问题进行探讨，以便更好地为工程设计服务。
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英文: Water delivery and injection line: cleanup scale and sediment.
中文: 输水、注水管线：清除水垢、沉积物。
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