求翻译：有20多年从业经验的钢结构专家，国家一级注册结构工程师；有一批顶尖的国际焊接工程师、结构防腐工程师和无损探伤人才。是什么意思？

20 years of experience in the steel expert, at the national level registered structural engineer; a group of top international welding engineer structure anticorrosive engineers and NDT personnel.

There are more than 20 years of experience in the steel, the country-level registered structural engineer; there are a number of top international Welding Engineer, structural corrosion engineers and non-destructive ultrasonic flaw detection.

Some more than 20 years are employed the experience steel structure expert, national level registration structural engineer; Some one batch of apexes international weld engineer, the structure guard against corrosion engineer and the lossless crack detection talented person.

Steel experts with more than 20 years industry experience, registered structural engineer at the national level; there are a number of top international welding engineer, anticorrosion engineering and non-destructive testing personnel.

正在翻译，请等待...