| 释义 |
traceless, a.|ˈtreɪslɪs|
[f. trace n.1 + -less.]
1. Leaving no trace or track; that cannot be traced; of a surface, that shows no traces or lines.
1651Davenant Gondibert ii. i. xxiii, Traceless and Swift, and Changing as the Winde. 1789Wolcott (P. Pindar) Subjects for Painters xxxv, On traceless copper sees imperial heads. 1889F. L. Oswald in Voice (N.Y.) 31 Oct., The strangest case of traceless disappearance is perhaps that of the Hungarian poet Petoefi. 1892J. Mather Poems 68 To traceless nothingness its course has run.
2. Math. Having a trace equal to zero.
1966Rev. Mod. Physics XXXVIII. 220/1 To each representation belongs a traceless tensor. 1973Nature 14 Sept. 78/1 A view of the Earth from Polaris, with W representing the pole of the traceless part of the nutation tensor. 1979J. C. Polkinghorne Particle Play iv. 63 There is a triplet representation of SU(3) which is called the fundamental representation because all other representations..can be constructed by mathematical manipulations on these three fundamental objects. The mathematical operations involved are direct products, symmetrizing, and making traceless.
Hence ˈtracelessly adv., in a traceless manner; without leaving a trace.
1839Bailey Festus xxix. (1852) 472 May they pass quick and perish tracelessly. 1894Illingworth Personality Hum. & Div. (1895) Notes 234 Vanishing tracelessly to give place to its successor. |