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海水中含有各种盐类，其中百分之90左右是氯化钠，也就是食盐。另外还含有氯化镁、硫酸镁、碳酸镁及含钾、碘、钠、溴等各种元素的其他盐类。氯化镁是点豆腐用的卤水的主要成分，味道是苦的，因此，含盐类比重很大的海水喝起来就又咸又苦了。
Seawater contains a variety of salts, which is about ninety percent of sodium chloride, is salt. Other salts, it also contains magnesium chloride, magnesium sulfate, magnesium carbonate and potassium, iodine, sodium, bromine and other elements. Magnesium chloride is the main ingredient of point of tofu with brine, the taste is bitter, therefore, with sea salts, a big proportion of drink up on salty and bitter. |