Let's take a tour of your teeth. Look in the mirror at your own teeth or check out a friend's smile. The part of the tooth you can see, which is not covered by the gum (your gums are the pink, fleshy part), is called the crown.
Factory Acceptance Testing. Testing by a manufacturer of a particular product to validate its conformance to performance specifications and ratings. Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001).
For moderate and high complexity tests, the FDA evaluates each new commercial test system during the premarket approval process by scoring seven criteria as described in the CLIA regulations. The final score is used to determine whether the test system is classified as moderate or high complexity. See 42 CFR 493.17.