A STUDY ON THE TRAIT VALUE OF THE SOUND FIELDS RADIATED FROM A ROUND LEAKY HOLE ON THE HEAT EXCHANGER TUBE WALL是什么意思_A STUDY ON THE TRAIT VALUE OF THE SOUND FIELDS RADIATED FROM A ROUND LEAKY HOLE ON THE HEAT EXCHANGER TUBE WALL在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句