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Comparing and research of airiness pipes cross section model .

通风管道横截面型状对比和研究。

Village environment is good , airiness , afforest area is larger .

社区环境杰出，空气畅通，绿化面积较大。

Spaces are divided not by walls but by translucent screens , adding to the airiness .

博物馆空间不是由墙壁来划分的，用的是一面面半透明的纱网，以增加空气的流通。

Research of airiness system by constant flux control .

恒流量控制通风系统的研制。

Request work environment nature airiness .

要求工作环境自然通风。