... high impact polystyrene 高抗冲聚苯乙烯 high manganese steel frog 高锰钢辙叉 high modulus glass fibre 高模数玻璃纤维 ...
基于350个网页-相关网页
·2,447,543篇论文数据，部分数据来源于NoteExpress
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。
youdao
应用推荐
模块上移
模块下移
不移动