查询词典 tungstic oxide

In this paper,that a series of sodium tungsten bronze crystals were prepared by electrolysis of molten salts containing sodium tungstic and tungstic oxide was reported.

文中采用熔盐电解法，电解钨酸钠与三氧化钨熔盐制备出系列钠钨青铜晶体，选用离子选择电极分析法快速、简便、可靠地测定了晶体中的钠含量，并通过X－射线粉末衍射确定了晶体的晶型结构及晶格常数a。

Commodities subject to export quota license are: corn, rice, wheat, cotton, wood products, live ox, live pig, live chicken, natural silk and its products, coal, coke, crude oil, finished oil, rare-earth metal, antimony oxide ore, antimony and antimony products, antimony oxide, tungsten ore, Ammonium Paratungstate, Ammonium metatungstate, Tungsten Trioxide and Blue Tungsten Oxide, Tungstic acid and salt, tungsten powder and its products, Zinc ores, Tin ores, tin and tin-base alloy, and white silver.

实行出口配额许可证管理的货物是：玉米、大米、小麦、棉花、锯材、活牛、活猪、活鸡、蚕丝类、煤炭、焦炭、原油、成品油、稀土、锑砂、锑及锑制品、氧化锑、钨砂、仲钨酸铵及偏钨酸铵、三氧化钨及蓝色氧化钨、钨酸及其盐类、钨粉及其制品、锌矿砂、锡矿砂、锡及锡基合金、白银。

WO3, an interlayer compound prepared by J. W. Johnson (1981) using yellow tungstic oxide hydrate. Suspension of white powdery tungstic acid in anhydrous pyridine yields on standing for 2 wk whiteHW4O13.3H2O. IR and DTA studies revealed the connection between that pyridine polytungstate and white powdery tungstic acid (microcryst.), whose composition may thereby be assigned as H2W4O13.nH2O.

WO3。粉状白钨酸在无水吡啶中放置两周后可得到另一种化学式为(C5H5NH)HW4O13.3H2O的吡啶化合物，经IR和DTA研究可初步说明该化合物与粉状白钨酸之间的联系，并因此推测白钨酸的组成可能为H2W4O13.nH2O。

Study is made of the process of violet tungstic oxide preparation and the influnce of APT raw material on the production of violet tungstic oxide are studied.

对紫色氧化钨的制取工艺、原料APT对紫色氧化钨生产的影响等进行了研究。

Based in Changsha, Hunan Province, the People's Republic of China, the Company offers carbides of tungsten, tungsten cobalt alloy, tungstic oxide and tungsten powder.

坐落于中国湖南省长沙市，中钨高新主要销售钨钴合金，三氧化钨和钨粉。2006年以来，中钨高新主要在四川省自贡市开展业务，截止2006年12月31日，该公司拥有了三个主要的分公司。

Based in Changsha, Hunan Province, the People's Republic of China, the Company offers carbides of tungsten, tungsten cobalt alloy, tungstic oxide and tungsten powder. During the year ended December 31, 2006, the Company operated its business mainly in Zigong, Sichuan Province.

坐落于中国湖南省长沙市，中钨高新主要销售钨钴合金，三氧化钨和钨粉。2006年以来，中钨高新主要在四川省自贡市开展业务，截止2006年12月31日，该公司拥有了三个主要的分公司。

Properties of fine tungsten powder and fine tungsten carbide powder from violet tungstic oxide are studied.The result shows that the process of violet tungstic oxide preparation is advanced and reasonab...

结果表明，紫钨制取工艺先进合理，由紫钨制得的钨粉、碳化钨粉细而均匀，分散性好，是制取高性能硬质合金的优质原料。

Violet tungstic oxide ; preparation technology ; powder morphology ; tungsten powder ; WC powder

紫色氧化钨；制取工艺；粉末形貌；钨粉；碳化钨粉

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。