单词：non-crystalline phosphate
非晶性磷酸盐
单词：non-crystalline phosphate 相关文章
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pH - a measure of how acid or alkali a solution is. As the pH gets lower, the solution is more acid. At a pH of 7 the solution is neither acid nor alkali. pH is the inverse of the logarithm of the con
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医务英语
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Scientific American(四)月