One of the major causes leading to the deteriorations like the deflection and cracking of current long span prestressed concrete (PC) beam bridge is the underestimation of prestressing loss.是什么意思_One of the major causes leading to the deteriorations like the deflection and cracking of current long span prestressed concrete (PC) beam bridge is the underestimation of prestressing loss.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句