tungsten

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钨丝的过程，研究了钨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。

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、钨晶体的(001)面预熔和熔过程进行分子动力学模拟。

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.

在酸 -苯羟乙酸 -辛可宁 -氯酸钾体系中 ,催极谱法测定钼酸铵产品中的微量钨。

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，含多金属的钨锰-白钨矿矿床会产主一系列的理、学变，形成次生富集钨矿床。

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

概述了几种电子管钨基阴极材料的研究进展及钼基原子膜阴极的研究现状。

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、钨、钼、钒、钾盐及特色非金属矿产等方面取得重要进展。

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

该催氧反应产的分布及其产率与三角三核双氧帽钼钨簇合中钼钨的比例有关。

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,对我国钨金属资源开发利用发展趋势作了分析。