Hardness test
[机] 硬度试验
🧩 词语组成解析
hardness
['hɑrdnɪs]
n. 坚硬;<物>硬性;困难;冷酷;
🗣️ 情景例句
I'll chop the onions.
我要去切洋葱。
Straws show which way the wind blows.
草动示风向。
Speculations about is nature have been going on for literally thousands of years,
人们对睡眠作用的种种猜测，确实有数千年之久。