In this paper, we first analyze the stressing feature, resistance to vibration, scope of application, economic performance and developing prospect of main structural form.
本文首先比较系统的分析了各种结构基本型式的受力特点、抗震性能、适用范围、经济性能以及发展前景。
The author thinks the main geographical feature of the human economic activity iseconomy assembles.
作者认为人类经济活动的最主要的空间特征是经济聚集。
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