The powder is prepared through the following steps: 1. sieving, washing and stoving W powder;

所述粉末的制备包括如下步骤：1）对纯钨粉进行筛分，清洗、烘干处理；

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The powder is prepared through the following steps: 1. sieving, washing and stoving W powder;

所述粉末的制备包括如下步骤：1）对纯钨粉进行筛分，清洗、烘干处理；

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