Metallic arc system
[机] 金属电弧熔接法
🧩 词语组成解析
arc
[ɑ:k]
n. 综合症状;弧（度）;天穹;电弧，弧光。;
vi. 形成拱状物;循弧线行进;
abbr. American Red Cross. 美国红十字会;
🗣️ 情景例句
He's gone for the day.
他整天都不在。
There was a big crowd and we had difficulty getting a taxi.
外面有一大群人并我们有很困难招一辆出租车。
They are working hard on the farm. The children are picking apples.
他们正在农场卖力地干活。孩子们在摘苹果。