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tungstic adj.【化學】六價鎢的,(正)鎢的;五價鎢的。

tungstic ocher

Abstract : analytical methods for impurities in tungsten and tungstic compounds in recent 10 years were reviewed . among them were atomic emission spectrometry , atomic absorption spectrometry , mass spectrometry , electrochemical analysis , spectrophotometry and activation analysis . 53 references were cited 文摘:綜述了近10多年來鎢及其化合物中雜質元素的分析方法,涉及方法包括原子發射光譜法、原子吸收光譜法、分光光度法、質譜法、電化學分析法以及活化分析法等。

With phosphato - tungstic acid as catalyst and phosphoric acid as dehydrant , n - phenylmaleimide was prepared from aniline and maleic anhydride by two - step method . the yield was 88 . 7 % and the purity was 98 . 2 % 以順酐和苯胺為原料,磷鎢酸作催化劑,磷酸作脫水劑,采用兩步法制得n -苯基馬來酰亞胺,得到最佳反應工藝條件,產品收率為88 . 7 % ,純度為98 . 2 % (質量分數) 。

In 1958 , ganzhou concentration plant was established and started its production . after 1963 , tungstic acid , apt , w powder , wc powder and cemented carbide could be produced too 1958年,贛州精選廠建成投產。 1963年以后,進一步發展到生產鎢酸、鎢酸鈉、仲鎢酸銨、鎢粉、碳化鎢粉、硬質合金等。

Industrial experience of producing tungstic acid using waste catalyst containing tungsten 利用含鎢廢催化劑生產鎢酸的工業實踐

Technological practice of producing tungstic acid using waste catalyst containing tungsten 利用含鎢廢催化劑生產鎢酸工藝實踐