自然硬度 meaning in English
natural hardness
Examples
- 3 , the floor is the plant crude fiber structure , its nature hardnessover 100 higher than the wood , which is not easy to distort , the service life is not less than 20 years
地板为植物粗纤维结构，它的自然硬度比木材高一百多倍，不易变形，使用寿命不小于20年