water hardness的用法和樣例：
例句
- This process removes the water hardness.
這一工藝去除水的硬度。 - The public desires water which is low in hardness and total solids, noncorrosive, and non-scale-forming.
人們希望水的硬度及固體含量都低，無腐蝕性，不生成水垢。 - The degree of hardness or the water hardness you will get to know from your responsible waterwork.
水質硬度可以通過水質測試儀測得，上述水硬度單位為德國度。
