The tubes of waterwall, superheater, reheater and economizer are the main boiler heating surface, whose secure and stable operation relate directly to the security of the whole power plant.是什么意思_The tubes of waterwall, superheater, reheater and economizer are the main boiler heating surface, whose secure and stable operation relate directly to the security of the whole power plant.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句