As a welding method of high efficiency and low energy consumption, double arc welding has a favorable foreground in the practical production.
双弧焊接作为一种高效节能、优质经济的焊接工艺方法，在实际生产中具有良好的应用前景。
The characteristics of double arc gain on non-circular curve are analyzed.
分析了双圆弧法拟合非圆曲线的特点。
The actual cylinder shaped conductor is isometric curve of double arc outside cycloid and its mathematic expression was deduced.
缸体的实际型线是双弧外摆线的等距曲线，并由此导出其数学表达式。
So, choose as far as possible to improve the nozzle of small high cutting speed and cutting quality is useful, but the nozzle at low altitude may cause double arc phenomenon.
所以，选用尽量小的喷嘴高度对提高切割速度和切割质量都是有益的，但是，喷嘴高度过低时可能会引起双弧现象。
The phenomenon of double arc which is usually caused by the reasons of too big welding current, too small diameter of the nozzle and eccentric of the cathode has been simulated.
针对造成双弧现象的原因，模拟分析了由于电流过大、喷嘴压缩孔径过小和钨极偏心三种因素所导致的双弧现象。
According to principle of plane engagement, the paper deduces the equation of conjugate tooth outline in workpiece from given double-arc tooth outline of hob.
根据平面啮合原理，由给定的滚刀双圆弧齿形，推导出与其共轭的工件齿形方程。
The results provided theoretical basis for the design and application of double-arc gear.
计算分析结果为双圆弧齿轮的设计和使用提供了理论依据。
Mostly conforming to the actual gearing and loading conditions, the model sets a basis for solving the dynamic problems of double-arc gears.
模型的建立为解决双圆弧齿轮动载荷问题提供了依据。
The regularity of stress and strain of surrounding rock and support structure when using(3-heading) excavation method to construct double-arc tunnel is carried out by FEM numerical method.
应用有限元数值方法，对连拱隧道“三导洞法”施工时围岩和结构的受力、变形规律进行了分析。在两正洞拱部施工的时候，左右洞拱顶沉降约占最终沉降的70%。
The regularity of stress and strain of surrounding rock and support structure when using(3-heading) excavation method to construct double-arc tunnel is carried out by FEM numerical method.
应用有限元数值方法，对连拱隧道“三导洞法”施工时围岩和结构的受力、变形规律进行了分析。在两正洞拱部施工的时候，左右洞拱顶沉降约占最终沉降的70%。
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