查询词典 tungstate

The Mg〓 ions in solution take part in the formation of passivation film, which was thicker than that formed in solution without Mg〓. In natural saturated air water and aerated water, the effect of several kinds of anions, dissolved oxygen pH and Ca〓, Mg〓 ions on corrosion inhibition of tungstate was investigated.

钨酸盐作为主要成分的缓蚀剂已经开始实际应用，但是对其缓蚀机理、特别是复配使用时的协同增效机理研究不多，本论文对钨酸盐及其复配缓蚀剂的缓蚀作用和协同增效机理进行了研究，并研究开发了环保型无磷钨系复合水处理剂。

The preparation process includes the following steps: dissolving activator and RE oxide in the molar ratio of 0.01-0.02 in concentrated nitric acid and heating to dry, dissolving the obtain RE nitrate in deionized water to obtain solution of RE nitrate; dissolving soluble tungstate and surfactant in deionized water to obtain tungstate solution; mixing the RE nitrate solution and the tungstate solution through stirring to reaction for 25-60 min to obtain white precipitate; hydrothermal reaction of the precipitate in a reaction kettle at 100-260 deg.c for 24-72 hr; centrifugally separating, washing and drying to obtain the product.

浓硝酸的加入量保证稀土氧化物溶解就可以，过量的硝酸可以加热除去；将可溶性钨酸盐和表面活性剂溶解于去离子水中，得到钨酸盐溶液，表面活剂性的加入量为反应原料重量的0-30wt％；将稀土硝酸盐溶液加入到钨酸盐溶液中搅拌，发生沉淀反应，磁力搅拌时间为25-60分钟，得到白色沉淀；将含有沉淀物的溶液作为前驱物加入到反应釜中，发生水热反应，反应温度为100-260℃，反应时间为24～72小时；离心分离，洗涤，干燥，即得所需产物。

The radiation imaging array solid detector includes flash crystal of cesium iodide or cadmium tungstate, photodiode coupled with the flash crystal and casing holding the flash crystal and the photodiode.

本发明包括由碘化铯或钨酸镉形成的闪烁晶体和与之耦合的光电二极管，闪烁晶体和光电二极管由壳体包容。

By using AC impedance and polarization curve,the corrosion inhibition for cupronickel B30 in 30% NaCl solution by two environment-friendly water treatment medicaments,namely PASP and sodium tungstate ,separately and compoundly is studied.

采用交流阻抗法和极化曲线法，研究了两种环境友好型水处理药剂聚天冬氨酸和钨酸钠的单一配方及其复配对3%NaC l中白铜管(B30)的缓蚀效果。

This paper presents the pulse laser characteristics of neodymium doped potassium gadolinium tungstate crystals grown in our institute.

本文报道了我所生长的掺钕钨酸钾钆晶体的脉冲激光特性。

The hardness and wear resistance of the RE-Ni-W-P-SiC composite coating increase with the rise of SiC and sodium tungstate concentrations in the bath respectively , while the hardness and wear resistance of the RE-Ni-W-P-SiC coating decrease with increasing sodium hypophosphate concentration in the bath.

随着镀液中次亚磷酸钠浓度的升高，镀层的硬度和耐磨性均降低。

The invention is characterized in that it dops ytterbium and zinc in lead tungstate crystal, which greatly improves its optical properties on the basis of retaining original good properties of lead tungstate crystal.

本发明在钨酸铅晶体中掺杂元素镱和锌，在保留钨酸铅晶体原有优良性能的基础上，大幅度改善其光学性能。

Comparing the two kinds of catalyst, although the high conversion could been gotten at the optimum reaction conditions respectively, to the same conversion, the reaction conditions for ammonium molybdate catalyst were higher than that for sodium tungstate catalyst, that means the catalytic activity of ammonium molybdate is higher than that of sodium tungstate.

两种催化剂相比，虽然在最佳工艺条件下，均可使反应达到较高的转化率，但达到相同转化率时钨酸钠催化剂所需的反应条件比钼酸铵催化剂高，所以总体来说，钼酸铵催化剂的反应活性高于钨酸钠催化剂。

In this dissertation, novel solution routes have been developed to prepare tungsten trioxide and tungstate nanomaterials with all kinds of morphologies using low-cost, facile sodium tungstate as raw material.

利用一种简单的方法制备了钨前驱体的中空纳米球，然后煅烧此前驱体得到了三氧化钨纳米中空球，在煅烧过程中没有破坏它的形貌。

The concentration of sodium tungstate impacts on the activation energies notably. The activation energies increase the concentration of sodium tungstate is improved.

研究取得以下成果： 1在化学镀Ni-Co-P磁性薄膜的配方中添加钨酸钠可以显著提高沉积速率和镀膜的磁性能。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。