Plasma Arc Machining (PAM) Plasma arc machining is a nontraditional thermal process. Plasma is defined as a gas that has been heated to a sufficiently high temperature to become partially ionized and therefore electrically conductive. The term plasma, as employed in physics, means ionized particles.
Recurring vs. Reoccurring. Reoccur and recur are verbs that share a common root word. While they are very close in meaning, they are not the same. Something that is recurring happens over and over again, possibly at regular intervals. In contrast, something that is reoccurring is simply happening again but not always repeatedly.
vb (intr) , -curs, -curring or -curred. 1. to happen again, esp at regular intervals. 2. (of a thought, idea, etc) to come back to the mind. 3. (of a problem, etc) to come up again. 4. (Mathematics) maths (of a digit or group of digits) to be repeated an infinite number of times at the end of a decimal fraction. [C15: from Latin recurrere, from re- + currere to run]