硬度 (yìng dù) — hardness (the property of being physically hard or resistant to deformation or indentation)

定義

例文

• 这种钢材的硬度非常高。
  Zhè zhǒng gāng cái de yìng dù fēi cháng gāo.
  The hardness of this type of steel is very high.
• 水的硬度由其中钙镁离子含量决定。
  Shuǐ de yìng dù yóu qí zhōng gài měi lí zǐ hán liàng jué dìng.
  The hardness of water is determined by its calcium and magnesium ion content.
• 莫氏硬度表是衡量矿物硬度的标准。
  Mò shì yìng dù biǎo shì héng liáng kuàng wù yìng dù de biāo zhǔn.
  The Mohs hardness scale is a standard for measuring the hardness of minerals.