Warning: file_put_contents(/www/wwwroot/ppbbu/73904.com/cache/5f488623901e87f56e3e50b1c5ec9410.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/73904.com/index.php on line 55 economic useful plant例句_economic useful plant英汉例句_economic useful plant双解例句_骑士汉英词典
The scheme for reforming air preheater and how to reduce the ratio of air leakage are analyzed. it is useful for power plant economic operation. 通過對廻轉式空氣預熱器改造的方案及措施分析，闡述了降低預熱器漏風率對電廠經濟運行所帶來的好処。