主要营养素 meaning in English

macronutrient
primary nutrients

A detailed examination of the historical uses of noni , the modern research concerning its principal nutrients , and a wealth of data from various doctors and other health professionals from around the world , all of which indicates that noni is one of today ' s most promising and impressive natural healing agents
《诺丽奇观》一书详细考察了诺丽果的传统用途、对其主要营养素的现代研究以及世界各地的医生和健康专家们所提供的丰富资料，表明诺丽是当今最有效、最令人印象深刻的天然医用剂。