查询词典 tungsten

The granite body in the Jiangjunzhai tungsten deposit is a compound rockmass, which has the features of crust-derived type granite and is the product of comagmatic evolution.

岩石学和岩石地球化学研究表明，将军寨钨矿花岗岩体为一复式岩体，是同源岩浆演化的产物，具有壳源花岗岩的特征。

When heat load flux increases to 3MW/m2, there are microcracks on surface in several micrometers depth.Microcracks complect to a reticulation along the tungsten grain boundaries.

热流密度为3MW/m2时，表面无宏观裂纹，试样表层几个微米内出现微裂纹，微裂纹沿钨晶粒边界交织成网状分布。

Conflagrant capability of Tungsten type delay composition were studied by burning rate, calorific value and sensitivity analytical measurements.

通过测量延期药燃烧速度，发热量和发火感度，试验研究了纳米材料对钨系延期药的燃烧性能变化。

Using W-HMS molecular sieve synthesized from the tungsten source of (NH4) 2WO4 as catalyst and hydrogen peroxide as oxidant, the effects of reaction time, temperature, dosage of catalyst, solvent type and volume, and oxidant concentration on the catalytic oxidation of cyclopentene to glutaraldehyde were investigated.

对以(NH4)2WO4为钨源合成的W-HMS分子筛为催化剂，过氧化氢为氧化剂，环戊烯合成戊二醛的多相催化反应进行了研究，考察反应时间、反应温度、催化剂用量、溶剂种类和用量以及氧化剂浓度等因素对戊二醛收率的影响。

With cellulose as the skeleton, gelatinized cassava starch solution and tungsten carbide were used as porogenic agent and inert densifier, respectively. The matrix prepared showed good sphericity and a logarithmic symmetrical distribution of particle size.

取得的主要结果如下：纤维素基复合层析基质的物理功能化：以再生纤维素为骨架，碳化钨粉末为增重剂，糊化木薯淀粉为制孔剂，采用&反相悬浮热再生法&和成球后去除淀粉方法，成功制备了纤维素/碳化钨复合微球，可用作层析介质的基质。

These results indicate that tungsten carbide decorating on the surface of carbon nanotube is one of the effective ways to improve its electrocatalytic activity.

这说明将碳化钨复合到纳米碳管的外表面是提高碳化钨电催化活性的有效技术方法之一。

Molten salts ; electrolyze ; tungsten powder

熔盐；电解；钨粉

Electrocatalytic properties and reaction mechanism of nitromethane electroreduction on nano-crystalline tungsten carbide thin film electrode were investigated by electrochemical methods.

采用电化学方法研究硝基甲烷在纳米晶碳化钨薄膜电极上的电化学还原性能和反应机理。

However,most historial tungsten mines in Gannan are faced with aresource crisis .the situation is not optimistic .

但是，历史悠久的赣南钨矿山目前大都面临着资源危机，资源形势不容乐观，因此加强已开发矿床的成因理论研究是一项很重要的工作，通过已开发矿的研究可以更好的指导找矿和矿区的后期二次开发。

A quality of the yellow tungsten oxide produced by Soviet hydrometallurgical plants was often lower than abroad.

但苏联工厂采用湿法冶金生产的黄色氧化钨产品，其质量仍然高于国外同类产品。

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。