张永安
- 网络Kenneth Cheung
张永安-
而且目前这方面的研究已经有了一定的进展，例如：张永安等采用活性炭吸附和乙二醇净化法成功地制备出了高纯三氧化钨。
At the same time , the research of this aspect has certain progress at present . For example , Zhang et al . using scheelite for tungsten source successfully prepared the high purity tungsten trioxide by activated carbon adsorption and ethylene glycol purification method .