Hexahydroxy N-containing heterocyclic compound without sulfur and phosphorus was synthesized and its structure was characterized.

合成了无硫、的六元含氮杂环化合物添加剂。

Determination of methamidophos,malathion,fenthion residues in beestings by gas chromatography.

用气相色谱法测定牛初乳中甲胺、马拉硫、和倍硫的残留量。

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、、砷的原理,并提出了具体的操作工艺。

The optimized conditions for phosphorus recovery as hydroxyapatite from wastewater by synthetic tobermorite through seeded crystallization were studied in this paper.

合成雪硅钙石为晶种,探索了用结晶法酸钙形式回收废水中的适宜条件。

On the basis of acetone-phosphomolybdate method to detect phosphorus, the microplate method was developed for the determination of activity units of phytase.

摘要在丙法测的基础上，在酶活测定时引入微板法。

Results show that P availability in latosol derived from shallow-sea deposit is higher than that in latosol derived from basalt.

砖有效性低的主要原因是土活性铝、铁、锰含量高，另外与土中不同形态无机占无机比例有关。

Halogen compunds coating fluorescent lamps phosphoresce to produce light in response to electric discharges inside the lamp (see electric discharge lamp).

卤素化合物作为萤光灯的涂料，灯管的和灯内部的电流反应而发光（参阅electric discharge lamp）。

The method has been successfully used to the determination of phosphorus in ferronickel samples.The results compare favourably with determination values of compensating method with reference solution.

方法用于镍铁样品中的测定，测定结果与参比容液消除法一致。

In this paper,the relation of heterotrophic bacteria to nitrogen and phosphorus in marine environment is studied by adding nitrogen and phosphorus to the seawater in mesocosm.

利用海洋围隔生态系统实验装置,向海水中施加不同浓度的氮和,研究海洋异养细菌与海水环境中氮、的关系。

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.

本发明还可在加入中和剂的同时加入含氮、、钾的基础肥料制成氮钾复合肥料。

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（ P 2 O 5 ） ·五氧化二是在过量氧气存在下燃烧元素得到的白色、微晶体轻质粉末。

According to the author's experience in the control of cotton aphids.the systemic insecticidal action of Systox was different when it was applied at different times of the day.

正>在与贫下中农一起用1059(内吸)防治棉蚜的多次生产实践中作者曾经注意到,一天之内不同时间喷药,药效有差异,傍晚喷药药效较好。