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سختی پن جانچ
A test to determine the calcium and magnesium content of water.
- 词性: noun
- 行业/领域: 化学
- 类别 分析化学
- Company: McGraw-Hill
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创建者
- shamoil ahmad
- 100% positive feedback
(patna, India)
A test to determine the calcium and magnesium content of water.
(patna, India)