单词：water hardness
water hardness的用法和样例：
例句
- This process removes the water hardness.这一工艺去除水的硬度。
- The public desires water which is low in hardness and total solids, noncorrosive, and non-scale-forming.人们希望水的硬度及固体含量都低，无腐蚀性，不生成水垢。
- The degree of hardness or the water hardness you will get to know from your responsible waterwork.水质硬度可以通过水质测试仪测得，上述水硬度单位为德国度。
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