Pre-stress must be inflicted during the cable net construction.
索网在建设时必须施加预应力。
At last, the cable force and displacement of the bridge is basically returned pre-condition.
最后，换索后索力、位移基本恢复到换索前状态。
At last, the cable force and displacement of the bridge is basically returned pre-condition.
最后，换索后索力、位移基本恢复到换索前状态。
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