welding toxic gases
相关英语词汇推荐
- lacquerware
- sullage head
- steckel mill
- bush,bushing
- oxyacetylene torch
- continuous strip mill
- continuous operation
- pattern metal
- ampangabeite
- inoculant alloy
- fire end
- casting powder
- moisture
- mixed scrap
- ground chamotte
- threee-strand continuous casting machine
- austenite region
- roller cold pilgering mill
- lapped T-joint;flanged T-joint
- polymorphism