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Body for the steel welded structure, with the light metal skin and hard shell-type tail beam.
机身为钢管焊接结构, 具有轻金属蒙皮和硬壳 式 尾梁.
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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.
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