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.
埃林瓦是一种用于手
簧
镍铬钢，因其能在很
温度范围内保持一定
。
钢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.
埃林瓦是一种用于手簧镍铬钢，因其能在很温度范围内保持一定。
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