In order to design the prestressed rock anchor reasonably, it is necessary to know the stree - field.

为了合理设计高吨位预应力岩锚, 必须清楚岩锚的应力场情况.

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Guangzhou Singing and Dancing Group Add : No 14 , Ding Xing 1 Stree, Sha He, Guangzhou Tel: 87201631.

广州歌舞团广州市沙河顶新一街14号87201631.

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