The new winter ventilation system consisted of a perforated plastic tube.
新的冬季通风系统由带孔的塑料管组成。
Experimental Research on Perforated Pipe with Divergent Tube in Discharge of Sludge from Settler
沉淀池扩张管嘴排泥装置的研制
Acoustic attenuation performance prediction and analysis of perforated tube dissipative silencers
穿孔管阻性消声器消声性能计算及分析
Finite Element Calculation and Analysis of Acoustic Attenuation Performance of Perforated Tube Silencers
穿孔管消声器消声性能的有限元计算及分析
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