invar
英[ɪn\'vɑː]
美[ɪn\'vɑ]
基本释义
- n.
- 不胀钢
实用例句
Geodetic leveling should be done with staves in which the onstrip 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.
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英英释义
Noun
1. an alloy of iron and nickel having a low coefficient of thermal expansion; used in tuning forks and measuring tapes and other instruments