The coarsening of W powder size and the effect of Li addition are clearly indicated in the step of WO 2.72 -WO 2,particularly in the step of WO 2-W.

• 关于钨粉粒度的长粗，加锂的作用从WO2.；72?WO2这一阶段起明显地表现出来，而在WO2?W这一阶段更为突出。