It has greater toughness than grade AMPCO 18.22 and better physical properties than grades AMPCO 18 or AMPCO 18.136.是什么意思_It has greater toughness than grade AMPCO 18.22 and better physical properties than grades AMPCO 18 or AMPCO 18.136.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句