hardness
'hɑ:dnis
基本解释
n. 坚硬, 困难, 严厉, 勇气
[化] 硬度
英文释义
n. the property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scale
n. a quality of water that contains dissolved mineral salts that prevent soap from lathering
n. the quality of being difficult to do
词形变化
上一个单词：Hardnair
下一个单词：hardness ageing