熱ねつ膨ぼう張ちょう係けい数すう

noun

thermal expansion coefficient

Technical term used in physics and engineering to describe how much a material expands per degree of temperature increase.

• 金きん属ぞくの熱ねつ膨ぼう張ちょう係けい数すうは温おん度どによってわずかに変へん化