能源危机呼唤节能加气:从现代建筑材料公司加气应用市场看北京市建筑节能能源危機呼喚節能加氣:從現代建築材料公司加氣應用市場看北京市建築節能 능원위궤호환절능가기:종현대건축재료공사가기응용시장간북경시건축절능 energy crisis calling for energy-saving aerated concrete:architectural energy-saving condition in Beijing referring to the aerated concrete market of Beijing Modern Architectural Materials Corporation
