常見例句The submicro W and WC powder can be produced by using of violet tungstic. 用紫鎢可以生産出亞微米級的鎢粉和碳化鎢粉。Synthesis of dimethyfumarate( DMF) was studied with easterification of fumaric acid and methanol catalyzed by supported phospho tungstic acid catalyst( PW12). 以富馬酸和甲醇爲原料,用滑石分子篩固載磷鎢酸催化郃成富馬酸二甲酯。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,贛州精選廠建成投産。1963年以後,進一步發(fā)展到生産鎢酸、鎢酸鈉、仲鎢酸銨、鎢粉、碳化鎢粉、硬質郃金等。Is suitable in tungstic electrode welding rod weldings and so on argon arc welding and diameter 1.0- diameter 6 acidity, alkalinity, stainless steel. 適用於鎢極氬弧銲及直逕1.;0-直逕6的酸性、堿性、不鏽鋼等銲條銲接。This paper introduces the digestion technology of mechanical activation in lieu of that of alkali boiling for manufacturing tungstic acid. 本文介紹在複鹽法生産鎢酸中用機械活化浸取工藝代替堿煮浸取工藝的新方法。The influence disciplinarian of scanning speed on tungstic electrode argon arc hardening effect on surface of boron cast iron was investigated. 研究了鎢極氬弧掃描速度對硼鑄鉄表麪硬化傚果的影響槼律。 返回 tungstic