Warning: file_put_contents(/www/wwwroot/ppbbbu/n94.cn/cache/9ab584a61125a7946ca0c8683fcf7a29.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/n94.cn/index.php on line 55 duct pilot例句_duct pilot英汉例句_duct pilot双解例句_94生活常识网有道词典
Air flow measurement of utility boilers is often liken by using venturi duct, latticed wing, multiple pilot tube and double venturi tube. 電站鍋爐的通風量，主要用風道型文丘裡、機翼、笛型琯及雙文丘裡進行測量。