hexagonal closed double bead wrench 六角环形双头扳手
double bead [建] 双珠饰
double-bead lap joint 双焊道搭接接头
double bead tire 双钢丝圈轮胎
double bead tyre 双缘轮胎
double safety bead clasp 双保险珠形钩扣
In addition, to weaken the effect of double quenching on the microstructure and properties of ASTM4130 steel, multi-pass welding and temper bead should be adopted.
另外为消除二次淬火对ASTM 4130钢组织和性能的影响，应采用多层多道焊，并添加回火焊道。
A new process of high speed seam welding with secondary rectification for double seam possesses good weld quality, high welding speed, smooth bead and low consumption features.
双缝高速次级整流缝焊是一项新工艺，具有焊接质量好、焊接速度快、焊缝表面光洁及能耗低等优点。
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