众所周知，焊接加工一方面要求焊工要有熟练的操作技能、丰富的实践经验、稳定的焊接水平；

It is well known that the welding processing on one hand requires on skilled operational skills, rich practical experience and stable level of welding;

youdao

众所周知，焊接加工一方面要求焊工要有熟练的操作技能、丰富的实践经验、稳定的焊接水平；

It is well known that the welding processing on one hand requires on skilled operational skills, rich practical experience and stable level of welding;

youdao