TY  - RPRT
TI  - A study of gas flow pattern, undercutting and torch modification in variable polarity plasma arc welding
AU  - Mcclure, John C.
AU  - Hou, Haihui Ron
PY  - 1994
UR  - https://ntrs.nasa.gov/citations/19950011641
ID  - 19950011641
ER  -