Rational selection of the anticorrosion schemes and the variety of the antirust materials can ultimately improve the quality and the economic value of the steel structure.
合理地选择防腐方案、防腐材料品种可以最大限度的提高钢结构质量和经济性。
The extradosed bridge structure features rational load-bearing capacity, great rigidity and convenient construction and the bridge is also economic and aesthetic.
矮塔斜拉桥结构受力合理、刚度大、施工方便，而且经济、美观。
Rational land use structure which belongs to a certain scope of the land is playing a larger a prerequisite for economic benefits.
合理的土地利用结构是一定范围内的土地发挥出较大经济效益的前提条件。
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