- spectral condition
- 谱条件
English-Chinese dictionary of mechanical engineering (英汉机械工程大词典). 2013.
English-Chinese dictionary of mechanical engineering (英汉机械工程大词典). 2013.
Condition monitoring — is the process of monitoring a parameter of condition in machinery, such that a significant change is indicative of a developing failure. It is a major component of predictive maintenance. The use of conditional monitoring allows maintenance to… … Wikipedia
Spectral theory of ordinary differential equations — In mathematics, the spectral theory of ordinary differential equations is concerned with the determination of the spectrum and eigenfunction expansion associated with a linear ordinary differential equation. In his dissertation Hermann Weyl… … Wikipedia
Spectral theorem — In mathematics, particularly linear algebra and functional analysis, the spectral theorem is any of a number of results about linear operators or about matrices. In broad terms the spectral theorem provides conditions under which an operator or a … Wikipedia
Theoreme spectral — Théorème spectral Un ellipsoïde en trois possède autant d axes de symétrie que l espace de dimensions. Ils sont notés ici x, y et z … Wikipédia en Français
Théorème spectral — Un ellipsoïde en trois possède autant d axes de symétrie que l espace de dimensions. Ils sont notés ici x, y et z … Wikipédia en Français
Abbe sine condition — The Abbe sine condition is a condition that must be fulfilled by a lens or other optical system in order for it to produce sharp images of off axis as well as on axis objects. It was formulated by Ernst Abbe in the context of microscopes.The… … Wikipedia
Calcul spectral — Analyse spectrale En physique et dans diverses techniques apparaissent des signaux, fonctions du temps ou, plus exceptionnellement, d une variable d espace. L analyse spectrale recouvre plusieurs techniques de description de ces signaux dans le… … Wikipédia en Français
Problème spectral — Analyse spectrale En physique et dans diverses techniques apparaissent des signaux, fonctions du temps ou, plus exceptionnellement, d une variable d espace. L analyse spectrale recouvre plusieurs techniques de description de ces signaux dans le… … Wikipédia en Français
Wightman axioms — Quantum field theory (Feynman diagram) … Wikipedia
spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… … Universalium
Self-adjoint operator — In mathematics, on a finite dimensional inner product space, a self adjoint operator is one that is its own adjoint, or, equivalently, one whose matrix is Hermitian, where a Hermitian matrix is one which is equal to its own conjugate transpose.… … Wikipedia