以下为句子列表：
英文: In this paper, a new type of slim beams with steel sections encased in a prorietary SP slab were investigated experimentally and theoretically, including a simply-supported beam, a framed beam and a cantilever beam.
中文: 摘要对一种新型组合梁－钢混凝土组合扁梁的承载力性能进行了试验研究，共完成3根不同形式的构件：简支组合扁梁、框架组合扁梁和悬臂组合扁梁。
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英文: The improvement in the strength of the cold-formed steel sections makes it possible to use thinner plates so as to achieve more economy in building construction.
中文: 摘要新材料和先进加工技术的进步使得钢材的屈服强度不断提高，为了取得更好的经济效益，冷弯钢材的厚度变得越来越薄。
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