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.
Use the verb refrain if you have a sudden impulse to do something, and you have stopped yourself from doing it. It's usually hard to refrain from doing something, because this word is used to describe habits, like smoking, or uncontrollable urges, like laughing. The Latin word refrÄnÄre is formed from the prefix re- back plus frÄnÄre to hold a horse back with a bridle..