Some advices on future research of the welding power source are given and they would make a found ground for the subsequent study of digitization CO2 inverter based on waveform control .

此外，针对本 焊机的研究提出了进一步的完善意见，为今后开展数字化波形控制CO2焊机的研究 奠定了良好的基础。

Al-Zn-Mg alloy series have high strength ductility good welding properties and craft performance and they are mainly used to be welding structural material of building military facility aviation spacecraft and ground vehicle .

Al-Zn-Mg系合金具有高的强度、韧性，良好的焊接性能和工艺性能，是建筑、军用设施、航空航天器与 地面车辆和装备的主要 焊接结构材料。

When welding current is fixed some important information such as length and section area of welding cable connection of ground wire can be shown by output voltage of instantaneous arc striking .

在焊接电流确定的条件下，引弧瞬间的焊机输出电压反映了 焊接电缆长度、截面积以及 地线连接情况等重要信息。

Welding Design for Horizontally Shallow Embedded DC Ground Poles

水平浅埋式直流 接地极的 焊接设计

According with the actual job requirements and related product sample of friction welding machine the relative parameter on the ground of demand of the line and style book of proportional valve has been estimated . The dynamical property of a several links have been analyzed step by step .

根据摩擦 焊机的实际工作要求及相关产品样本，做出有关参数估计，逐步分析了系统及电液比例阀各个环节的动态性能。