tungsten electrode短语¹³¹⁶²⁰⁺³ 基本例句 钨极,钨电极 The grind sharpened angle of tungsten electrode, the diameter of end face and welding parameters that are important for welding are introduced from theory to application. 对与焊接至关重要的钨极高磨尖角度、端头直径，焊接规范参数从理论到应用予以介绍。 chemyq