one head automatic arc welding machine

one Determinative

— (ordinal first) The number 1. We have one nose and one mouth.

one Noun

— The number 1. One is the smallest whole number.

one Pronoun

— One is a singular pronoun which means "someone" or "people". It is used more often in formal writing. It is easy to see the difference if one looks closely enough.

head Noun

— The head is the highest and most important part of the body. He put his head on the desk and fell asleep. — The head Is the owner of something. After the problems, the head of the company left. — The bathroom on a ship is called the head.

head Verb

— To go in a direction is to head there. Bill heads for the mall after work.

automatic Adjective

— If something is automatic, it works by itself. A washing machine is automatic.

automatic Noun

— A car that changes the gear by itself is called an automatic. The car is not manual shift, it is automatic. — A gun that continues to fire while the trigger is pressed is called an automatic. That machine gun is an automatic.

arc Noun

— An arc is part of a circle. — Electricity jumping from one place to another. This is very bright and looks like lightning.

arc Verb

— If something arcs, it makes an electrical curve. — If something arcs, it goes along a curved path.

welding

— noun fastening two pieces of metal together by softening with heat and applying pressure

machine Noun

— A machine is a man-made object with moving parts. I'm putting the clothes in the washing machine. Is there anything you want washed? This new machine is the fastest computer I've ever had.

machine Verb

— If you machine something you fasten or shape it with a machine.