查询词典 phosphorus

The paper studied the improved process for preparing phosphorus sulfochloride, where high-effective liquid catalyst was employed, and investigated the catalytic activity and service life of the novel catalyst. The optimum process conditions of batch and semi-continous operation were obtained by single factor experiments and modified simplex experiments.

本论文研究了采用高效液相催化剂制备三氯硫磷的新工艺，对催化剂寿命和性能进行了考察，利用单因子实验和改进单纯形实验找到了间歇操作和半连续操作的最佳工艺条件。

The dehydration of sulphonyl derivatives of N-alkylformamide using phosphorus oxychloride in the presence of triethylamine at 0-10℃ provides a useful method for the preparation on sulphonylmethyl isocyanides e.g.

光气同三乙胺或是嘧啶是一组有效的制取异氰基化合物的试剂，但是，由于光气在安全性方面的问题它不适宜在大规模上制取异氰基化合物。

Surficial sediment phosphorus is increasing from eulittoral zone to the station in Bohai Bay,which the pollution is serious...

渤海湾表层沉积物磷呈现从潮间带向渤海湾大面站增大的局势，污染近岸高，远岸低。

The contents of different forms of nitrogen and phosphorus in different sites were mainly influenced by terrigenous inputs, sediment grain size and hydro-dynamics.

表层沉积物中总磷的含量平均值为455.94mg/kg；有机磷占总磷含量的39.41%，平均含量为179.69mg/kg；铁结合磷和铝结合磷平均含量为94.97mg/kg。

A suggestion is put forward to adding H2SO4 or (NH4)2SO4 into the mother liquor after calcium nitrate tetrahydrate separated for a further removal of residual Ca, thus the Ca content can be decreased to 0.35% from the previous 3.4%, and the viscosity of neutralized slurry to 0.04 ～0.08 Pa·s, with nice fluidity of slurry Water soluble phosphorus accoun ts to 88%～90%, and the process improves the adaptability of phosphate rock to nitrophosphate production.

提出分离四水硝酸钙后的母液加入H2SO4或(NH4)2SO4进一步除去母液中残钙，可使母液中钙含量由3.4%降到0.35%以下，中和器中料浆粘度可降到0.04～0.08 Pa·s，料浆流动性很好，产品中磷的水溶率可达88%～90%，并提高了硝酸磷肥生产对磷矿的适应能力。

This invention created by the antibody ELISA analysis methods can be used to detect thio ethoxy organic phosphorus pesticide residues, the method is rapid, sensitive and inexpensive and convenient.

本发明用该抗体建立的酶联免疫吸附分析方法可用于检测硫代乙氧基有机磷类农药残留，方法具有快速、灵敏、廉价以及方便等优点。

It is researched about the department of thiobacillus ferrooxidans and soaking phosphorus by experimentations.

本文主要是通过实验对氧化亚铁硫杆菌的分离纯化以及浸磷的初步研究。

Although there is not relation with K2HPO4, it need phosphorus as energy in the initial stages of growth of thiobacillus ferrooxidans .

虽然K2HPO4对浸出效果没什么影响，但是在细菌生长的最初期需要P作为生长源。

Effects of fertilizers with different ratios of nitrogen,phosphorus and potassium on the infestation of cashew red-banded thrip Selenothrips rubrocinctus.

这是一种间位上接有C15不饱和侧链的单酚和双酚混合物，可用于制备涂料专用的醛树脂。

The lowest energy structures of phosphorus-excess triatomic clusters are an isoceles triangle with C2V symmetry, and metal-excess triatomic clusters show minimum energy configurations to be a triangle with Cs symmetry.

富P的MP2团簇是具有C2V对称性的等腰三角形结构，而富M的M2P团簇则是具有Cs对称性的三角形结构。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。