| 释义 |
el·in·var
\ˈelə̇nˌvär\ noun
(-s)
Etymology: French élinvar, from élasticité invariable invariable elasticity
: an alloy that contains about 50 percent iron, 36 percent nickel, and 12 percent chromium, that has low thermal expansivity and a modulus of elasticity virtually unaffected by changes in temperature, and that is used for springs for watches and other precise instruments |