- derivative unit
- 微分器
English-Chinese electricity dictionary (电气专业词典). 2013.
English-Chinese electricity dictionary (电气专业词典). 2013.
Unit vector — In mathematics, a unit vector in a normed vector space is a vector (often a spatial vector) whose length is 1 (the unit length). A unit vector is often denoted by a lowercase letter with a hat , like this: (pronounced i hat ). In Euclidean space … Wikipedia
Derivative — This article is an overview of the term as used in calculus. For a less technical overview of the subject, see Differential calculus. For other uses, see Derivative (disambiguation) … Wikipedia
Derivative (finance) — Financial markets Public market Exchange Securities Bond market Fixed income Corporate bond Government bond Municipal bond … Wikipedia
Directional derivative — In mathematics, the directional derivative of a multivariate differentiable function along a given vector V at a given point P intuitively represents the instantaneous rate of change of the function, moving through P in the direction of V. It… … Wikipedia
Covariant derivative — In mathematics, the covariant derivative is a way of specifying a derivative along tangent vectors of a manifold. Alternatively, the covariant derivative is a way of introducing and working with a connection on a manifold by means of a… … Wikipedia
Darboux derivative — The Darboux derivative of a map between a manifold and a Lie group is a variant of the standard derivative. In a certain sense, it is arguably a more natural generalization of the single variable derivative. It allows a generalization of the… … Wikipedia
derived unit — (in physics, chemistry, etc.) a unit derived from fundamental units of length, mass, and time. * * * derived unit noun A unit of measurement derived from the fundamental units of a system • • • Main Entry: ↑derive * * * derived unit, Physics. any … Useful english dictionary
Port Jackson — Sydney Harbour redirects here. For other uses, see Sydney Harbour (disambiguation). For other uses, see Port Jackson (disambiguation). Coordinates: 33°51′30″S 151°14′00″E / … Wikipedia
Protein — Proteins are large organic compounds made of amino acids arranged in a linear chain and joined together by peptide bonds between the carboxyl and amino groups of adjacent amino acid residues. The sequence of amino acids in a protein is defined by … Wikipedia
AG — AG, Ag or ag may refer to: Organizations *Agrigento (Fu), a Sicilian commune * Aktiengesellschaft (AG), a German acronym on company names, meaning public company *Air Contractors (AG IATA code), a freight airline *Assemblies of God (AG), the… … Wikipedia
Sectional density — is the ratio of an object s weight to its cross sectional area. It conveys the ability for an object to overcome resistance. When a projectile is in flight or impacting an object, it is the sectional density of that projectile which will… … Wikipedia