Vanadium phosphate is one of the most important classes of open-framework transition metal phosphates.

钒磷酸盐是孔道结构过渡金属磷酸盐中重要的一类。

Conclusions: There is significant difference in effecting of the precision of the casting full crown with different proportion of phosphate-bonded investment.

结论:磷酸盐包埋材料的不同配比对铸造全冠的精密度的影响有显著差异。

So we should change the traditional applying fertilizer method that phosphate fertilizer was only used as basal manure in tomato production.

因此，在番茄生产中应改变磷肥只作基肥施用的传统施肥方法。

Sulfides,carbonate,and phosphate are always present in industrial wastewater,urban sludge,or their treatment processes. Because the trace metals can easily precipitate with sulfides and other anion,they also will not exist in adequate amount and effective biological-form in the actual anaerobic digesters.

工业废水、城市污泥及其处理过程中常会产生或含有硫化物,而硫化物及其他一些阴离子如磷酸根和碳酸根等能与金属离子生成沉淀,因此在实际厌氧消化处理系统中,微量元素不能以充足量和有效的生物学形式存在,底物的最大转化率受到影响。

Wear resistance of composite phosphate coating was investigated too.

并研究了复合磷化膜的耐磨性。

Introduction of different active groups such as tertiary amine group, carboxylic acid group, fluorine-containing group, sulfonate group, phosphate group etc. into one surfactant molecule greatly improved hydrophilic -hydrophobic properties and light oil dispersion in mine water.

该表面活性剂,分子量大,在分子骨架上具有多种活性基团,如叔胺基团、羧酸盐基团、含氟烃链、磺酸盐基团和磷酸酯基团等。 这些活性基团极大的改善了表面活性剂的亲水亲油性能,提高了表面活性剂在含油、含盐介质中的驱液能力。