tungsten

tungsten tetrahydroxide

四羟化; 四氢氧化

The distribution and yield of product undergo the proportion of molybdenum and tungsten in the bi-oxo-capped trinuclear molybdenum tungsten clusters.

该催化氧化反应产物的分布及其产角核双氧簇合物的比例有关。

Cemented carbides metal: Tungsten powder, carbonize tungsten, Cobalt powder, Molybdenum powder, pure tungsten, Cobalt nickel material, tungsten copper metal, etc.

硬质合金原料：粉、碳化粉、钴粉、镍粉、粉、高纯、铜合金、钴镍材料及其它合金粉末；

The experimental results show that scandia distributed evenly on the surface of tungsten particles.

用液-固掺杂及两段还原法制备了氧化钪及铼掺杂的粉。

This paper is described to draw tungsten wire with ZTA precision ceramic wortle at a high temperature, The profiles of tungsten wire and mould hole and the relation between them are researched.

阐述ZTA精密陶瓷拉丝模在高温下拉制丝的过程，研究了丝和模孔表面的状况及两者间的相互关系，讨论了拉丝模的使用寿命及其拉丝磨损机理。

4. access to fit u-haped fluorescent lamp and iodin tungsten light, and electronic luminescence board.

4. 可配装u型荧光灯、碘类和电子发光板。

Several kinds of tungsten thermonic cathode were introduced.Moreover, the advances in the cathode with a monoatomic layer on the molybdenum substrate were reviewed.

概述了几种电子管基阴极材料的研究进展及基原子膜阴极的研究现状。

The development trend of tungsten resources in china was analyzed in aspects of supply and demand,price tendency and macropolicy.

从供给需求、价格走势、宏观政策等方面,对我国金属资源开发利用发展趋势作了分析。

Products include tungstates and molybdates, molybdenum trioxide, and ferro-molybdenum.

网站简介 : Producer of tungsten and molybdenum compounds in China.

Mineral exploration made important progress in .coal, uranium, iron, gold, silver, copper, nickel, zinc, lead, antimony, tungsten, molybdenum, vanadium, kainite and characteristic non-metal.

矿产勘查在煤、铀、铁、金、银、铜、镍、铅、锌、锑、、、钒、钾盐及特色非金属矿产等方面取得重要进展。

In the system of sulfuric acid phenylglycollic acid cinchonine potassium chlorate, micro amount of tungsten in ammonium molybdate products has been determined by catalytic polarography.

在硫酸 -苯羟乙酸 -辛可宁 -氯酸钾体系 ,催化极谱法测定酸铵产品的微量。

Under hygrothermal climate, a series of physicochemical changes take place on huebnerite-scheelite deposit,containing polymetallic sulphi-des and slich a deposit forms a secondary tungsten deposit.

在温湿气候条件下，含多金属硫化物的锰-白矿矿床会产主一系列的物理、化学变化，形成次生富集矿床。

Therefore the electrode can be used for welding of pipe, stainless and fine parts.Thereby it has been adopted in place of Thoriated Tungsten electrode on many aspects.

因此，它常常用于管道、不锈钢制品和细小精致部件的焊接，在许多方面已经取代钍电极。

The development trend of tungsten resources in china was analyzed in aspects of supply and demand,price tendency and macropolicy.

从供给需求、价格走势、宏观政策等方面,对我国金属资源开发利用发展趋势作了分析。

Mineral exploration made important progress in .coal, uranium, iron, gold, silver, copper, nickel, zinc, lead, antimony, tungsten, molybdenum, vanadium, kainite and characteristic non-metal.

矿产勘查在煤、铀、铁、金、银、铜、镍、铅、锌、锑、、、钒、钾盐及特色非金属矿产等方面取得重要进展。

Several kinds of tungsten thermonic cathode were introduced.Moreover, the advances in the cathode with a monoatomic layer on the molybdenum substrate were reviewed.

概述了几种电子管基阴极材料的研究进展及基原子膜阴极的研究现状。

Under hygrothermal climate, a series of physicochemical changes take place on huebnerite-scheelite deposit,containing polymetallic sulphi-des and slich a deposit forms a secondary tungsten deposit.

在温湿气候条件下，含多金属硫化物的锰-白矿矿床会产主一系列的物理、化学变化，形成次生富集矿床。

In the system of sulfuric acid phenylglycollic acid cinchonine potassium chlorate, micro amount of tungsten in ammonium molybdate products has been determined by catalytic polarography.

在硫酸 -苯羟乙酸 -辛可宁 -氯酸钾体系 ,催化极谱法测定酸铵产品的微量。

Using the modified analytic embedded-atom method (MAEAM), the molecular dynamics (MD) simulation was performed to study the premelting and melting behavior of (001) plane of niobium and tungsten.

摘要采用改进分析型嵌入原子方法(MAEAM)，对铌、晶体的(001)面预熔和熔化过程进行分子动力学模拟。

This paper is described to draw tungsten wire with ZTA precision ceramic wortle at a high temperature, The profiles of tungsten wire and mould hole and the relation between them are researched.

阐述ZTA精密陶瓷拉丝模在高温下拉制丝的过程，研究了丝和模孔表面的状况及两者间的相互关系，讨论了拉丝模的使用寿命及其拉丝磨损机理。