The stability of the AC MIG arc is closely related to the current before the polarity reversing point and voltage after that point.
指出交流MIG电弧稳定性与换向前的电流、换向后的电压有密切关系。
The formation point-roils were difficult, for through the inverted half Jonathan had to think upside down, reversing the curve of his wing, and reversing it exactly in harmony with his instructor's.
列队定点翻滚是很难学的，因为在倒转时，乔纳森得头朝下、脚朝上倒过身子思考问题，同时还要把翅膀倒弯过来，而且要弯得恰到好处，倒好与他的导师一致。
The point that experienced workers are easy to access and factories are at buying market are reversing.
熟练工人到处都是、工厂是买方市场的观点现在得到扭转。
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