为算法名签名以抵抗攻击，该攻击是基于置换成效率更低的算法。
The algorithm names are signed to resist attacks based on the substitution of a weaker algorithm.
指出与传统通风方式相比，置换通风是一种高效率的通风方式。
Compared with the traditional ventilation way, points out that displacement ventilation is a high-efficiency ventilation way.
对办公室、会议室及体育馆置换通风系统的通风效率进行了实测。
Measures the ventilation efficiency of the displacement ventilation systems for an office room, an assembly room and a gymnasium.
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