grain pest

• 储粮害虫

grain pest的用法和样例：

例句

1. PH3 recirculation fumigation maintained effective concentration for a long time.The stored grain insects in depth of grain bulk was killed.
   保持有效杀虫浓度的时间长，能够杀死仓内粮堆中的储粮害虫，取得了良好的杀虫效果。