以下为句子列表：
英文: 2 Cables and water pipe used shall be capability of authority approvals.
中文: 电缆和水管要有相关证明其可靠性。
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英文: A water pipe is hollow.
中文: 水管是空心的。
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英文: A water pipe that consists of a bottle or a vertical tube partially filled with liquid and a smaller tube ending in a bowl, used often in smoking narcotic substances.
中文: 水烟枪一种用部分盛液体的瓶或垂直管和一根接在木球上的小管做成的盛水管，经常用来吸麻醉物品
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英文: According to the different requirements of customers (mostly large diameter water pipe size) for the design of concrete production.
中文: 根据客户的不同要求(主要是下水管道大外径尺寸)进行具体的设计生产.
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英文: After a discussion of the heat transfer condition of the chilled water pipe which is installed in tunnel, the relation between the temperature of the chilled water and its transportation distance, the author holds that a central refrigeration system shall
中文: 摘要分析了冷冻水管沿地铁区间隧道敷设时与周围环境的换热状况；认爲采用集中供冷的方式，在隔热情况下可不攷虑冷冻水因长距离输送而引起的温升损失。
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