elinvarn. 鎳鉻恆彈性鋼學術名詞埃林瓦爾合金：電機工程一種恆彈性的鎳鉻鋼：電機工程恆彈性鋼：材料科學恆彈性鎳鉻鋼：電力工程英文釋義Elinvar is a trademark for a kind of steel used for watch springs because its elasticity is constant over a wide range of temperatures