Warning: file_put_contents(/www/wwwroot/zidian/oumou.cn/cache/8a8dbf2695d49f689425734c7f64f3f2.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/oumou.cn/index.php on line 58 duct pilot例句_duct pilot英汉例句_duct pilot双解例句_歐米惠必应词典
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。