| 释义 | invariable, a. (n.)|ɪnˈvɛərɪəb(ə)l|
[f. in-3 + variable, or a. F. invariable (Oresme, 14th c.; Cotgr. 1611 has ‘Invariable vnvariable’); so It. invariabile (Florio, 1611).]
Not subject to variation or alteration; unchangeable, unalterable; remaining ever the same, unchanging, constant; occurring alike in every case, unvarying.
1607Topsell Four-f. Beasts 137 Their common properties of nature, such as..remaine like infallible and invariable truths in euery kinde and country of the world. 1696Whiston The. Earth iv. (1722) 339 The Heat on the Face of the Earth would still be equal and invariable. 1709Berkeley Th. Vision §66 If there was one only invariable and universal language in the world. 1747Hervey Medit. II. 93 Clear as the Sun, the greater and invariable Luminary. 1770Phil. Trans. LX. 364, I used an invariable pendulum which M. de la Condamine got constructed at Quito. 1825McCulloch Pol. Econ. ii. ii. 141 The value of gold and silver is certainly not invariable, but, generally speaking, it changes only by slow degrees. 1841Myers Cath. Th. iii. §5. 16 The conscience of man is no invariable and definite endowment, the same in all men everywhere and always. 1868Freeman Norm. Conq. II. ix. 395 Banishment was the invariable sentence. 1871C. Davies Metr. Syst. i. 17 Every system of weights and measures must have an invariable unit for its base.
†b. Of a person. Obs. rare.
1696Phillips (ed. 5), Invariable, firm, resolute, constant. 1718Hickes & Nelson J. Kettlewell iii. §86. 409 He persisted Invariable to his Principles.
c. Math. Of a quantity: Constant. Of a point, line, etc.: Fixed.
1704Hayes Fluxions 77 By the Property of the [Logarithmic] Curve, the Subtangent PT is equal to an invariable Quantity. 1807Hutton Course Math. II. 304 In the algebraic expression a2 - bx, where a and b denote constant or invariable quantities, and x a flowing or variable one. 1820Herschel Examp. Finite Diff. 126 This equation is to be integrated on the hypothesis of y2 dy2 / dx2 being invariable by the change of z to z + 1. 1828Minchin Unipl. Kinemat. 44 An equation between the radius vector drawn to the instantaneous centre from an invariable point (or particle) in the moving body, and the angle which this radius vector makes with fixed line (or invariable row of particles) in the body.
B. n. Math. An invariable quantity, a constant.
1864in Webster. 1885in Cassell's Encycl. Dict. |
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