The difficulties occurred during manufacture of Baosteel 1550 mm large back up roll wereintroduced, as well as the technical counterplot adopted.是什么意思_The difficulties occurred during manufacture of Baosteel 1550 mm large back up roll wereintroduced, as well as the technical counterplot adopted.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句