With hoisting method by double cantilever beam, the hoisting of large steel trusses was get success.

  • 双悬臂梁吊装法解决了大型钢桁架高空吊装问题,且省工、省料,实践证明, 该法安全、可靠,较为实.

  • 网络文摘精选 2025-01-18 12:35:08

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