Zn is one of the necessary microelements for human body, which is important and helpful for well developed human body.
营养元素锌是人体必需的微量元素之一，对人体的生长发育起着重要的作用。
Organic-inorganic granular fertilizer made of chicken manure powder plus N, P, K chemical fertilizers and microelements B, Zn, Mn, et al.
利用鸡粪为主体原料配以N、P、K化学肥料和硼、锌、锰等微量元素制成便于贮藏、运输和使用的有机-无机颗粒肥。
Zn is one of the necessary microelements for human beings, which is important and helpful for human body.
营养元素锌是人体必需的微量元素之一，对人体的生长发育起着重要的作用。
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