该方法同样适用于弯头的制作放样，具有较强的实用性。
This method also applies to production of lofting elbow. Therefore it has more powerful of practicability.
并以千斤顶为例，分析了工具软件和选型方案的选择原则，给出了放样弹簧、模拟水流等的制作过程。
Taking jack as an example, the selective principia of software tool and lectotype project was analyzed, the facture process of simulating water flow and enlarging sample for spring was presented.
为使厂内制作的钢管桁架各构件满足设计要求，保证现场顺利拼接，借助计算机模型进行钢管桁架空间圆弧的放样和大直径钢管的火焰加工、厂内预组装；
Following sequences were done by SCK in order to keep shop fabricated steel tube trusses and other parts meet with the requirement of design and site assembly.
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