The welding stress and deformation makes the strength and toughness of the hull structure decreased and also makes the stress corrosion cracking of the welding spot which leads to unfavorable influence on fracture characteristics fatigue strength form and dimensional precision of structure .

焊接应力和变形使得船体构件的强度、韧性下降，并且能 导致 焊接部位 产生应力腐蚀开裂，对结构的断裂特性、疲劳强度和形状尺寸精度 产生 极为不利的影响。

Objective To explore whether ozone induced in welding leads to oxidative stress or oxidative injury in welders .

目的探讨电焊作业中 产生的臭氧是否引起 电焊 作业者体内氧化应激和氧化损伤。

The heat flow and element migration during welding process leads to these complex microstructures and local distributions in mechanical properties .

由 焊接过程中的热流动和元素迁移 导致了这些复杂组织及局部力学性能分布。

The results suggested that different welding material match leads to different resistance to SSCC .

不同的 焊接匹配 将 导致管线钢具有不同的耐腐蚀性能；

The difference of welding temperature leads to produce different stresses in the welded joint it often brings that welding angle strength is insufficient after welding affecting the strength of the component .

由于 焊接加热温度的不同 导致焊接接头内部产生不同的内应力，它的存在往往导致焊后型材出现焊接角强度不足等问题，影响构件的强度。

On the other side the digital wave in recent years also influences the field of arc welding power supply which leads to digitally controlled invert arc welding power source .

另外，数字技术的发展浪潮也影响到了 弧焊电源领域， 催生了采用数字式控制器的逆变弧焊电源。

The successful application of power inverter technology in resistance spot welding leads to a more promising future for developing of spot welders in precision and intelligent .

逆变电源技术在电阻 焊接领域的成功应用，为 点焊设备的精密化、智能化提供了广阔的开发和应用前景。

The application of dual beam laser welding of different thickness blanks in automobile manufacture leads to decreases vehicle weight and reduces manufacturing costs effectively .

不等厚板激光 焊接技术在汽车制造中的应用，有效地 降低了车身重量，节约了生产成本。

Because most electric welding machines for shielded metal arc welding are belong to low-voltage apparatus the safe problems of using electricity often are neglected which leads potential danger .

焊条电弧 焊机多为低压电器，安全用电往往被忽视， 导致在使用中存在很多安全隐患。

This paper analyzes the welding particularity between the reversing pieces and enamel wire winding leads ( needn 't remove the surface insulate coat of paint ) of micro-motor 's armature .

分析了微型电机转子整流子换向片与漆包线绕组 引线（不必去除表面绝缘漆层） 焊接的特殊性；