Rockery shape, contour line must have change, change and must be in equilibrium are obtained.
假山外型，轮廊线须有改动，改动中又须求得均衡。
This paper studies the shape and the tension of suspenders under an equilibrium state.
本文研究工程中常见的悬链线平衡形状及其张力。
This paper studies the shape and the tension of suspenders under an equilibrium state.
本文研究工程中常见的悬链线平衡形状及其张力。
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