normal trace
1Trace class — In mathematics, a trace class operator is a compact operator for which a trace may be defined, such that the trace is finite and independent of the choice of basis. Trace class operators are essentially the same as nuclear operators, though many… …
2Trace en plan d'une route — Tracé en plan (route) Le tracé en plan d une route est, avec le profil en travers et le profil en long, un des trois éléments qui permettent de caractériser la géométrie d’une route. Il est constitué par la projection horizontale sur un repère… …
3Tracé en plan d'une route — Tracé en plan (route) Le tracé en plan d une route est, avec le profil en travers et le profil en long, un des trois éléments qui permettent de caractériser la géométrie d’une route. Il est constitué par la projection horizontale sur un repère… …
4trace element — trace elements 1) N COUNT A trace element is a chemical element such as iron or zinc that occurs in very small amounts in living things and is necessary for normal growth and development. 2) N COUNT A trace element is a very small amount of a… …
5trace element — n a chemical element present in minute quantities esp one used by organisms and held essential to their physiology compare MICRONUTRIENT (2) * * * an element that is required in minute concentrations for normal growth and development. Trace… …
6Trace heating — Electric Trace Heating, also known as Electric Heat Tracing and Electric Surface Heating, is a system used to maintain or raise the temperature of pipes and vessels. Trace heating takes the form of a electrical like heating element run in… …
7Tracé en plan (route) — Le tracé en plan d une route est, avec le profil en travers et le profil en long, un des trois éléments qui permettent de caractériser la géométrie d’une route. Il est constitué par la projection horizontale sur un repère cartésien topographique… …
8Normal operator — In mathematics, especially functional analysis, a normal operator on a complex Hilbert space H (or equivalently in a C* algebra) is a continuous linear operator that commutes with its hermitian adjoint N*: Normal operators are important because… …
9trace — 1. v. & n. v.tr. 1 a observe, discover, or find vestiges or signs of by investigation. b (often foll. by along, through, to, etc.) follow or mark the track or position of (traced their footprints in the mud; traced the outlines of a wall). c… …
10trace element — an element that is required in minute concentrations for normal growth and development. Trace elements include fluorine (see fluoride), manganese, zinc, copper, iodine, cobalt, selenium, molybdenum, chromium, and silicon. They may serve as… …