接着，分析研究了利用常规设计方法进行城市地下空间设计时，应该引起重视的若干特殊问题：地铁建筑空调系统形式的选择；
In this paper, we also discuss the special problems we should be attention to when the common design methods used in urban underground space:air conditioning system forms selection of subways;
并对超高压压力控制系统的动态响应性能进行了分析，为压力控制系统方案的确定提供了一定的理论依据，并根据实际情况选择了合适的超高压压力控制系统形式。
The dynamic response property of pressure controlling system is analyzed, based on which the suitable controlling pattern can be chosen. The proper controlling form is provided in the design.
结果表明，在所选择的六种方案中，水环热泵系统的费用年值最小，是一种最为经济的户式中央空调系统形式；
The results show that the total annual cost of water loop heat pump system is the minimum among the six systems, which is the optimal option under the given conditions.
结果表明，在所选择的六种方案中，水环热泵系统的费用年值最小，是一种最为经济的户式中央空调系统形式；
The results show that the total annual cost of water loop heat pump system is the minimum among the six systems, which is the optimal option under the given conditions.
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