... ratio of expansion 膨胀比 ratio of floor rise 船底斜度比 ratio of gear 变速比 ...
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The analysis indicates when the flow-ratio of system in high-rise building falls to 50% of the total design flow, the two-way electronic valve on the fan-coil in first floor causes valve failure.
分析表明当某高层建筑空调系统水流量降低为总设计流量的50%时，其底层风机盘管上的电动两通阀动作失灵。
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