hardnesses的翻译，读音
释义：
(hardness 的复数) n. 坚硬, 困难, 严厉, 勇气
[化] 硬度
plural of hardness
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
[化] 硬度
plural of hardness
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