Calcium is an important mineral nutrient, has all kinds of physiological function. It plays an important role in physiology and metabolism of fruit trees.
钙是一种重要的营养元素，具有多种生理功能，在果树生理代谢中起着重要作用。
Selenium is a necessary trace element and has important function of physiological health. The production of organic Se by biological pathway is attractive.
硒是一种必需微量元素，具有重要的生理保健功能，利用生物合成方法生产有机硒引起了人们的关注。
Trace life element has much more important Physiological function and nutritive action although it is possessed of 0.05% of man's and animals' body weight.
微量生命元素虽然仅占人和动物体重的0.05%左右，但它对机体有十分重要的生理功能和营养作用。
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