Using the atomic absorption law examination essential element copper, the zinc, the calcium, the magnesium, the hard content, the anode dissolves the voltammetry examination toxic element blood lead content, and carries on the comparative analysis with the normal comparison group.

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The essential feature of the Communist Society is the liberation of humanity, which directly requires that the society take the liberation of humanity as its essential element, and set up the non-possessive system in social mechanism and communization and sharing in the way of life. That's why it is called the Communist Society.

共產(chǎn)社會最根本的特征是人性解放国内自拍露脸在线视频，直接要求社會以人性解放為基本要義，在社會機制上建立非占有制度美女牲交一级a片免费，在生存方式上表現(xiàn)為共產(chǎn)共享欧美性爱高清一区，故稱為"共產(chǎn)主義"。

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non-essential amino-acid=dispensable amino-acid：非必需氨基酸

non-chernozem zone 非黑鈣土帶 | non-essential amino-acid=dispensable amino-acid 非必需氨基酸 | non-essential element 非必要元素

isolated essential singularity：孤立本性奇點

孤立元(素) isolated element | 孤立本性奇點 isolated essential singularity | 孤立理想 isolated ideal

Essential trace element：必需微量元素

必需氨基酸:Essential Amino Acid | 必需微量元素:Essential trace element | 要素培育:training of the advanced essential factors