必需营养素 Essential nutrient
必需营养元素 Essential Elements ; essential nutrient element ; Indispensable Nutritive elements
非必需营养素 Non-essential nutrient
日必需营养素 Recommended Dietary Allowance ; RDA
植物必需营养元素 essential element
动物必需营养 nutritive requirements of animals
种必需营养素 essential nutrients
人体必需营养素 Essential Nutrition
含人体必需营养素 contains essential nutrients
研究表明，在当季生长并在树上成熟的蔬菜比那些在温室里生长并在激光刺激下成熟的蔬菜所含的必需营养要高得多。
Studies demonstrate that vegetables grown in season and ripened on the tree are far higher in essential nutrients than those grown in greenhouses and ripened by laser.
镍是一种稀有金属元素，也是动植物和人的必需营养微量元素。
Nickel is one of the rare metals, and it is indispensable to plant, animal and human beings.
达到这一标准需要：能提供足够能量和必需营养的饮食、适合饮用的饮水，和充分的卫生条件。
Food Utilization is the proper biological use of food, requiring a diet providing sufficient energy and essential nutrients, potable water, and adequate sanitation.
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