以下为句子列表：
英文: Compared with a common central AC System, the water source &Heat pump AC System needs neither cooling room, boiler room, AC machine room nor big-size ventilation duct and the water pipe system without temperature keeping will also reduce the material cost
中文: 与一般的中央空调系统相比，水源热泵空调系统无需考虑制冷房，锅炉房，空调机房，也不需设大的通风管道：无保温的水管系统减少了材料费。
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英文: It is widely used in the pipe system of hot wind in building material, glass, mining and power departments.
中文: 适用于建材、玻璃、矿山、电力等行业的热风管道系统中。
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英文: The mathematical analysis shows that, with disregarding local head losses and by means of different simplified rigid models, the calculated results of the maximum pressure in a pressurized pipe system containing trapped air mass are equal to and independe
中文: 摘要通过数学分析证明，在不计局部水头损失时，目前常用的几种简化刚性数学模型的最大气压计算结果相等，并与管道内初始充水段长度无关。
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英文: The pipe system had passed the acceptance air pressure test performed by the installing contractor.
中文: 管道系统已经通过了安装公司所做的空气压力测试。
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英文: The valve is widely used in building material, metallurgy, chemical, electric power industries. It is the discharging pressure device in pipe system of compressed, easy-exploding gas.
中文: 防爆阀普遍适用于建材、冶金、化工、电力等部门。作为压缩、易爆气体管道系统的卸压装置。
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