... 无粘结预应力工程 Unbonded prestressed works 无粘结力预应力 prestress without bond 无粘结的预应力筋 non-bonded tendon ...
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prestress without bond concrete construction 无粘结预应力混凝土施工
prestress without bond beam 无粘结预应力梁
prestress without bond concrete 无粘结预应力混凝土
prestress without bond technology 无粘结预应力技术
two way prestress without bond 双向无粘结预应力
prestress without bond steel strand 无粘结钢绞线
post-tensioning prestress without bond 后张法无粘结预应力
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