Khn
[医][=Knoop hardness number]努普（氏）硬度值
🗣️ 情景例句
Give me a chance to think about it,
给我一个机会想一想，
Shake like jelly.
我吓得腿软。
Instruments have been devised and can be so placed that all three elements can be recorded in different graphs.
已经设计出了一些仪器，它按照一定的安放方式就可测绘出这三种运动的曲线图。