How to protect unbonded tendon and anchorage is the key to prevent corrosion in unbonded prestressed concrete.The cause of corrosion, mechanism of action and protection measures are herein analyzed.是什么意思_How to protect unbonded tendon and anchorage is the key to prevent corrosion in unbonded prestressed concrete.The cause of corrosion, mechanism of action and protection measures are herein analyzed.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句