Warning: file_put_contents(/www/wwwroot/zidian/biehu.cn/cache/7daaea2182096b6e1e4e508929df9eb2.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/biehu.cn/index.php on line 58 duct pilot是什么意思，duct pilot的翻译，duct pilot音标、读音、用法和例句_甲百匯小鸡词典
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。