短語詞組短語undersize powder 篩下粉末undersize bushing 小型軸承襯套Hole undersize 孔徑小;孔小undersize fraction [礦業(yè)]限下率;篩下部分undersize returned 粒度過小的返回undersize aggregate 遜徑骨料undersize bearing 小型軸承undersize distribution 篩下產(chǎn)品粒度分布undersize product 篩下產(chǎn)品 返回 undersize