The double-wall steel cofferdam is widely applied in bridge deep water foundation due to that it is of characteristics of high structural strength and good waterproof performance.
而双壁钢围堰具有结构强度高、防水性能好的特点，因此，在桥梁深水基础中得到广泛应用。
Selection of materials. The bridge designer can select from a number of modern high-strength materials, including concrete, steel, and a wide variety of corrosion-resistant alloy steels.
桥梁设计者能选用大量的现代高强材料，包括混泥土，钢筋，和多种耐腐蚀的合金。
To introduce research and manufacture and production of high strength PC galvanized steel wire for bridge cables.
介绍桥梁缆索用高强度PC镀锌钢丝的研制与生产情况。
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