Specification for low nickel - chromium steel bar for the manufacture of forged bolts only 仅用于锻制螺栓的低镍-铬钢棒规范
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表弹簧的镍铬钢,因其能在很大的温度范围内保持一定的弹性。