They also contain nutrients-vitamin K, vitamin c, potassium, magnesium and boron-that are important for healthy bones.

它们还含有营养素——维生素k、维生素c、钾、镁和硼——对骨骼健康很重要。

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Its composition containing: organic humus and nitrogen, phosphorus, potassium, calcium, magnesium, sulfur and iron, copper, zinc, boron, molybdenum and other trace elements.

它的成份含﹕有机腐殖质和氮、磷、钾、钙、镁、硫及铁、铜、锌、硼、钼等多种微量元素。

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Davy: British chemist who was a pioneer of electrochemistry, using its methods to isolate sodium and potassium (1807) and barium, boron, calcium, and magnesium (1808).

戴维：英国化学家，电化学的创始人，用它的方法分解出了钠和钾(1807年)，钡、硼、钙和镁(1808年)。

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