w surface造句

• 2 . the severe erosion is due to the bad skeleton intensity and isolated w particals , which results from the poor reduce of w surface oxidation . when the arc works , the capillary iv is poor , so cu is splitting greatly
  ( 2 )严重烧损是由于w粉表面的氧化膜在烧结过程中不能很好的还原，致使骨架的烧结强度不高，大部分w颗粒以孤立的状态存在，毛细作用微弱， cu很容易喷溅，在反复的开断后， w颗粒剥离造成。