由于食盐是钠在食物中普遍的来源，医生给病人规定的，饮食通常要求吃无盐食品。
Considering that table salt is the commonest source of sodium in food the diet usually calls for eating salt-free foods.
由于群智能优化算法思想简单、易于操作，且对优化函数没有特殊的要求而得到了人们的普遍关注。
It has aroused the universal concern because of its characteristic of simple theory, easier operation, and no special requirements for optimized function.
酶联免疫吸附测定法(ELISA)由于具有无放射性污染、特异性强、灵敏度高、测定周期短、对实验室条件要求不高等许多优点，因而受到人们的普遍关注和重视。
Enzyme linked immunosorbent assay (ELISA) is think highly of a method, it has many virtues, such as non-radiation pollution, strongly specificity, high sensitivity and timing-shorted.
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