下跌到2600点支撑位以下确定了第三条扇形趋势线的位置。
The fall below support at 2600 has confirmed the location of the third fan trend line.
本工程屋面檩条采用高冷弯薄壁型钢材质Q345，隅撑，屋面水平支撑，檩条拉条材质均为Q235。
Roof purline is adopted with cold-bending and thin-wall steel (Q345), knee bracing, roof horizontal bracing and purline drawn rod Q235.
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