The wall is built of alternating sections of stone and earth, with some sections reaching a height of up to 4 meters.
这堵城墙是用石头和泥土交替建造而成，有些路段达到了4米的高度。
The pipeline bridge is built up with triangle sections, its shear stiffness can be derived from the stress diagram for the truss with triangle section.
在管道跨越工程中，常用三角形截面组合管拱，由三角形截面桁梁的受力分析图，分析推导出其抗剪刚度。
The pipeline bridge is built up with triangle sections, its shear stiffness can be derived from the stress diagram for the truss with triangle section.
在管道跨越工程中，常用三角形截面组合管拱，由三角形截面桁梁的受力分析图，分析推导出其抗剪刚度。
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