major-minor-minor PRF switching technique
major-minor-minor PRF switching
arcarc transform fault
left-lateral arc-arc transform fault
right-lateral arc-arc transform fault
AC arc welding power source∥Pulsed arc stabilizer
Beaman stadia arc=Beaman arc
East China Sea and Ryukyu Trench Arc Back-Arc
gas metal arc welding-pulsed arc
high-velocity air-fuel arc(HVAF-ARC)
island arc-island arc collision
island-arc-inner arc basin zone
Plasma arc ∥ Plasma arc by a microcomputer aided photo processing
trench-arc-back arc system
twin arc submerged arc welding
a minor in English intensive reading