mechanized welding造句

例句与造句

1. Another shielding gas mixture, argon-hydrogen, is used in the mechanized welding of light gauge stainless steel, but because hydrogen can cause porosity, its uses are limited.
2. At the same time, improved telecommunications, high-speed mechanized welding and the use of rock saws to cut permafrost have combined to make pipeline building faster and cheaper than ever, said Phelps, the executive at WestCoast, one of the companies planning to build a line.
3. It's difficult to find mechanized welding in a sentence. 用mechanized welding造句挺难的