Warning: file_put_contents(/www/wwwroot/ppbbu/62383.com/cache/8089a8e916f50ec3e07c634afcc2d6e9.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/62383.com/index.php on line 55 duct pilot例句_duct pilot英汉例句_duct pilot双解例句_流逝汉英词典
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。