4.Principle and operation technology of removing silicon,phosphorous and arsenic from sodium wolframate is presented.
阐述了钨酸钠溶液中除硅、磷、砷的原理,并提出了具体的操作工艺。
5.Molecular orbitals of hydrogen cluster H_4 and homoatomic cluster P_4 of representative element phosphorous are qualitatively constructled by using fragment molecular orbital approach.
本文用定性道理论和碎片道法构造了氢原簇H_4和代表性元素磷的四原簇合物P_4的道。
6.Phosphorous Pentoxide(P 2 O 5 ) ?P 2 O 5 is a kind of light white minicrystal powder which is made by burning phosphorus with excess oxygen.
五氧化二磷( P 2 O 5 ) ·五氧化二磷是在过量氧气存在下燃烧元素磷得到的白色、微晶体轻质粉末。
7.At the same time of adding neutralizing agent the basic fertilizer containing nitrogen, phosphorous and potassium can be added so as to obtain the invented azophoska.