单词weldor
n.: 焊工；焊接专家；焊接专业人员；焊机
网络: 施焊工
焊机
焊接专业人员
焊接专家
焊工
Pulmonary samples taken by bronchoscopy from 10 weldor patients were observed under electron microscope.
10例电焊工尘肺病人经支气管肺活检的样品进行电镜观察。
How to strengthen the technique certification exam and management for handworked arc weldor
如何加强手工电弧焊工的考证和管理