This article introduced the primary advantages and the application range of hydraulic power brake system, and the working principle of single pipeline brake system.

介绍全液压动力制动系统主要优点、适用范围及其单管路制动系统的工作原理。

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The primary air fan-coil system is a system form that is used widely, whose water system hydraulic optimization is an important mean of advancing design work quality and efficiency.

风机盘管加新风是空调系统中广泛采用的一种空调系统形式。其风机盘管水系统管网水力优化是提高空调系统设计质量和运行效率的重要手段。

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Currently, the hydraulic performance of the submerged pump system at home and abroad is still lack in-depth understood, and its optimum hydraulic design research is still in primary stage.

目前国内外对潜水泵装置的水力性能还缺乏深入了解，潜水泵装置优化水力设计的研究仍处于起步阶段。

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