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1·The scattered blue particles are cupric nitrate and zinc nitrate, a byproduct of the chemical reaction.

略带蓝色的部分是硝酸铜和硝酸锌，一种化学反应后的产物。

2·The thesis introduced the procedure of synthesizing L-aspartic acid zinc complex with the raw material of L-aspartic acid and Zinc nitrate.

以L-天门冬氨基酸和硝酸锌为原料合成L-天门冬氨基酸锌螯合物。

3·Zinc enrichment also improved melon fruit quality, the content of zinc increased 17.1 % compared to CK, whereas the content of nitrate and nitrite reduced 6.4 % and 10.2 % respectively?

增施锌肥还使甜瓜果实中的锌元素含量提高17.1%，而硝酸盐和亚硝酸盐含量分别降低了6.4%和10.2%，果实品质提高。

4·Electric heating pipe can be widely used in heating water, oil, air, nitrate solution, acid solution, alkali solution and low melting point metal (aluminum, zinc, tin, Babbitt).

电加热管可广泛应用于加热水、油、空气、硝盐溶液、酸溶液、碱溶液和低溶点金属(铝、锌、锡、巴氏合金)。