对于木结构或钢筋焊接桁架结构温室，必须保证每年作一次表面防腐处理。
The wooden structure or welded steel truss structure greenhouse, we must ensure that each year make a deal with anti-corrosion surface.
桁架的焊接是在前面，三个单轮垂直冲击支柱双方延长，鼻子单位有杠杆停牌。
The welded truss was extended at the front and sides to three vertical shock struts with single wheels, the nose unit having levered suspension.
并对复杂节点组装顺序、焊接顺序、精度控制技术和桁架起拱进行了研究。
Besides, assembly of complex joints, welding sequence, precision control technology and truss arching are researched.
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