hardness

/'hɑ:dnis/ uk　 词频 #17667

托福 TOEFL英语专业八级英语专业四级

hardness 是什么意思

中文释义

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

hardness 的真实例句

以下例句摘自真实英文文章，看看 hardness 在自然语境里怎么用：

This happened for pencils of different hardnesses, with different initial shapes, and for a pencil-shaped analogue made from bull horn.

—— Universally ouchy

We’ve seen little evidence that the most common showerhead filters have much effect on the softness or hardness of water, or on calcium buildup.

—— 7 Best Shower Filters of 2026 Are WIRED-Tested and -Approved

The company also claims that independent testing showed the shower filter could remove the vast majority of volatile organic compounds (VOCs), microplastics, mineral hardness, and heavy metals like lead and cadmium.

—— 7 Best Shower Filters of 2026 Are WIRED-Tested and -Approved

You probably shouldn’t expect these shower filters to soften the mineral hardness of your water or remove most substances, which derives mostly from dissolved calcium and magnesium salts in your water.

—— 7 Best Shower Filters of 2026 Are WIRED-Tested and -Approved

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