The vertical tendon had to be prestressed twice to ensure effective prestressing. 豎向預應力應兩次張拉以保證有效預應力。
The testing results show that there are different degrees of prestressing loss in cables of suspended structure. 檢測結果表明，該方法準確可靠，單索和群索在施工過(guò)程中都有不同程度的預應力損失。
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