Preassembled parallel wire strands, in contrast to structural strands, do not require prestretching.
预先装配的平行钢丝索与结构钢,不需要预拉。
Preassembled parallel wire strands, in contrast to structural strands, do not require prestretching.
预先装配的平行钢丝索与结构钢,不需要预拉。
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