In this paper, blind welding, cold shortness and hydrogen brittleness are mainly discussed as the major problems arising in underwater wet welding. 湿法焊接的主要问题是“盲焊”、“冷脆”和“氢裂”,本文介绍了克服这些弊端的工艺和方法;
I often feel faint, cold feet, shortness of breath and numbness in my legs. 常觉得头晕,脚冷,呼吸不顺,腿还发麻。