The depth column has one track on the left and two tracks on the right.
深度栏左边具有一个记录道、右边具有两个记录道。
Sunlight greenhouse structure is steel pipe structure of non-column and large truss depth.
温室结构为无立柱、大跨度桁架钢管结构。
Sunlight greenhouse structure is steel pipe structure of non-column and large truss depth.
温室结构为无立柱、大跨度桁架钢管结构。
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