New and improved nickle-base,iron-nickle-cobalt-base superalloys were available for use in high-pressure turbine airfoils in aircraft gas turbines.是什么意思_New and improved nickle-base,iron-nickle-cobalt-base superalloys were available for use in high-pressure turbine airfoils in aircraft gas turbines.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句