n.微量营养素；微量元素
Selenium is the necessary micronutrient in the living process of humanbeing and animals. 硒是人体和动物生命过程中必需的微量营养素。
Copper is a micronutrient that serves as an essential factor to all organisms. 摘要铜是各种生物都必需的一种微量元素。
There are many kinds of micronutrient elements contained in foods that are vital to human health. 摘要食品中含有与人体健康密切相关的多种微量元素，微量元素的毒性和生物有效性取决于它们的化学形态。
微量元素
