查询词典 tungstate

The epoxidation can be performedwell when the concentration of quaternary ammoniumsaltand sodium tungstate is 0.06 mol/L and 0.03 mol/L, respectively.

结果表明，季铵盐和钨酸钠的浓度分别为0.06，0.03 mol/L时的催化效果最佳；α-和β-蒎烯的转化率随着H2O2与蒎烯的量比增大而增大，当H2O2与α-蒎烯和β-蒎烯的量比分别为2.0和1.8时，其转化率均可达到100%；较高的温度不利于环氧化反应的进行，因此，环氧化反应温度需控制在20℃以下。

Sodium tungstate and tungsten carbide are applied in tungsten coat as raw materials, the applications of tungsten are brought into play.

电沉积含钨镀层所用含钨原料主要是钨酸钠、碳化钨等，所得含钨镀层性能特色明显，其钨用量很少，发挥钨功能很大。

The results indicate that sodium benzoate, ammonium benzoate, cinnamic acid inhibited anodic process significantly. Pure sodium tungstate was less effective.

结果表明：苯甲酸钠、苯甲酸铵、肉桂酸对DI材的阳极过程有明显的抑制作用；单纯的钨酸钠对DI材的缓蚀效果不佳。

High voltage anodization of aluminum in mixed electrolytes of phosphoric acid and sodium tungstate could be divided into four stages: conventional anodization stage,initial stage of anodic deposition,rapid growth stage and slow growth stage.

结果表明其氧化行为可以分为四个阶段，即常规阳极氧化阶段、膜层沉积的初始阶段、快速增厚阶段和缓慢生长阶段。

The result shows that the neurons and axons are very clear.CONCLUSION: It is a highly sensitive method to trace nerve pathway by using CB-HRP as tracer and sodium tungstate as stabilizer of TMB.

用CB-HRP作为示踪剂，以钨酸钠作为四氨基联苯胺显色剂的稳定剂的方法是一种高效敏感的神经通路追踪方法。

On the other hand, sodium tungstate dehydrate complexed with oxalic acid can act as highly efficient catalysts for the transformation from alcohols to carbonyl compounds under controlled microwave irradiation and solvent-free conditions.

第二部分中，我们观察到，作为一种过程强化手段，微波具有显著的促进催化选择氧化反应加速进行的能力，这在多相的锰氧化合物体系和均相的钨酸钠—草酸催化体系中都有具体表现。

The pure and WO3-doped TiO2 nanoparticles photocatalyst was prepared by chemical precipitation, in which titanium tetrachloride was used as Ti-precursor, ammonia as precipitant and sodium tungstate as doping donor.

以TiCl4为钛前驱体，氨水为沉淀剂，钨酸钠为掺杂体给体，采用化学沉淀法，制备了纯的与WO3掺杂的TiO2纳米光催化剂。

METHODS: Using CB-HRP as tracer while using sodium tungstate as stabilizer of TMP to antrograde tracing the projection of optic nerve fibers on anterior region of hypothalamus and retrograde tracing the distribution of hypoglossal nerve fibers on the dorsal side of medulla.

采用结合了霍乱毒素亚单位B的辣根过氧化物酶作为示踪剂，用钨酸钠作为四氨基联苯胺显色剂的稳定剂，顺行追踪视神经纤维向下丘脑前区的投射；逆行追踪舌下神经纤维在延髓背侧的分布。

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。