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本文介绍国外为减轻起重机吊臂的重量,从使用材料及结构形式两个方面所作的研究和改进。文中列有吊臂所使用的主要材料,材料的化学成分及机械性能等。
This article describes the research and improvement made abroad in light of the use of materials and structural forms to reduce the weight of crane jibs. The article lists the main materials used for the boom, the chemical composition of the material, and the mechanical properties.