ducted air system
... ducted air system propeller 导管推进器 ducted air system 导管空气系统 ducter 微阻计 ...
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集装箱空气导管系统 container air duct system
导管空气分布系统 ducted air distribution system
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由于其简单，安装风机盘管机组更经济比导管或中央供暖系统空气处理单元。
Due to their simplicity, fan coil units are more economical to install than ducted or central heating systems with air handling units.
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