The purpose of this study is to investigate the effect of heat recovery system by redirecting the exhaust air through a mechanism device in a hot air dryer.是什么意思_The purpose of this study is to investigate the effect of heat recovery system by redirecting the exhaust air through a mechanism device in a hot air dryer.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句