... manganese stearate 硬脂酸锰 manganese steel frog 锰钢辙岔 manganese steel 锰钢 ...
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High Manganese Steel Frog 高锰钢辙叉
manganese steel frog crossing 锰钢辙叉
solid manganese steel frog 高锰钢整铸辙叉 ; 高锰钢辙叉
cast manganese steel frog 高锰钢整铸辙叉 ; 整铸锰钢辙叉
rail bound manganese steel frog 钢轨组合锰钢叉心辙叉
manganese e steel frog 锰钢辙岔
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It is very difficult to welding a high carbon steel rail and a high manganese steel frog, which is still a worldwide puzzle.
碳钢钢轨与高锰钢辙叉的焊接难度很大,仍属国际性难题。
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