摘要:This paper construct a new method of revise inverse matrix of functionHession matrix. In unconditional minmal value use newton mode. This do not mate two ovderspatil deriva-tives can minimize.
摘要:The oscillation for a class of the second order neutral delay difference equations with variable coefficients is discussed. A sufficient condition is obtained for oscillation of the equa-tion and difference operator △.
摘要:A concise solution of enveloping surface of surface family for equation of single parametric surface family are quadratic forms with parameter“a”is given.
关键词:Single parametric surface family;Enveloping surface;Quadratic forms
摘要:In this paper, the endomorphism ring of M - projective module is discussed, it is obtained that the endomorphism ring of an incomposible module P is a local ring when its Jacobson radical is superfluous.
关键词:M - projective module;Endomorphism ring;Local ring
摘要:When light is total reflected, transmission wave still exists. This article discussed the existence and properties of evanescent wave, and introduced its applications on several aspects.
摘要:This paper discusses the specific expression method of the reaction rate of the dif-ferent chemical reaction type on the definition of the chemical reaction rate.
摘要:The conception of quasi - spline was given in order to resolve the problems exist-ing in key and spline connection. Researching on quasi - splin profile was carried out also. It fol-lows from analysis that quasi - spline with arc triangle sectional profile has the advantages of easy to be machined and convenient to be measured.
摘要:The triangle wave generator, which is composed of FET and operational amplifier circuit, is applied to trigger circuit of automatic phase - shift of flash lamp. It solves the technical problem to view the high frequncy vibrator.
摘要:On the base of Hertzian stress theory we developed a new kind of disk cam mecha-nism whose follower has concave circle - arc bottom. This article presents theoretical support to this new concept, offers both diagrammatical and analytical steps for the cam contour design, ex-pounds the selection of basic dimensional parameters. Practical calculations have proved that this kind of mechanism can reduce the contact stress and wear, prolong the life of the mechanism. So it is more appropriate to satisfy high - speed and heavy - load requirements in modern machinery than the conventional cam mechanism.
摘要:This article introduces the technological processes of warp - woof - two - way -resilient denim production and summarizes the measures of technological approaches which in-volued.
摘要:CAI is one of education means of information age. This article introduces CAI sys-tem and its application, explores the problem and application strategy in the use at the institutions of high learning, expound the position and influence of CAI in modern education.