According to work practice of copper raw materialsinspection and the research, analyze, summarize on unmoral raw material in recent years.
根据铜原料检验的工作实践，对近几年来进厂的异常原料进行研究、分析、总结。
2
A visual inspection must be done carefully for the materials, especially for those to be used in fabrication of pressure vessels.
必须对材料仔细进行外观检查，对制造压力容器所用材料尤需如此。
3
Although Marquette is charged with falsifying an inspection report on March 4, inspectors did check the crane and steel and other materials onsite the day before the accident, Lancaster said.