invar是什么意思

2024-01-17 20:39:16

invar

美[ɪnvɑː] 英[ɪnvɑː]

n. 因钢；镍铁合金

Noun

an alloy of iron and nickel having a low coefficient of thermal expansion; used in tuning forks and measuring tapes and other instruments

Automatic Measurement System of Invar Rods Based on Image Processing[J]. 引用该论文 Xu Xinhua;Wang Qing;Qian Zheng;Zhang Shexian.
Geodetic levelling should be done with staves in which the divisions are marked on a strip of invar. 大地水准测量必须使用分划刻在因瓦带上的水准标尺。
If the pendulum is made of invar,the bob does not rise or fall much. So the clock keeps good time in summer and winter. 如果用不胀钢做钟摆，摆锤升降的距离就很小，这样无论夏季或冬季，钟都走得很准。
There is a material which we call invar. It is made of different metals. Invar never expands or contracts much, and so it is useful in clocks. 有一种我们称之为不胀钢的材料，它是由不同的金属制成的，膨胀和收缩均很少。因此用在钟里是很有用的。
A very low linear expansion coefficient sample carrier made from invar, ensures that temperature change has no effect on the sample position. 由不胀钢制成非常低膨胀系数的样品载台保证温度变化对样品的位置没有影响。
If the pendulum is made of invar, the bob does not rise or fall much. So the clock keeps good time in summer and winter. 如果用不胀钢做钟摆，摆锤升降的距离就很小，这样无论夏季或冬季，钟都走得很准。