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uploads/elinvar.jpg

elinvar n.【冶金】鎳鉻恒性鋼。

eliot

Elinvar is a trademark for a kind of nickel - chromium steel used for watch springs because its elasticity is constant over a wide range of temperatures 埃林瓦是一種用于手表彈簧的鎳鉻鋼,因其能在很大的溫度范圍內保持一定的彈性。