defabbr.防御（=defense）abbr.延缓的（=deferred）abbr.定义（=definition）abbr.明确的（=definite）Defreen.德弗里

1. It has shown that this polyether modified polysiloxane defoamer provides good defoaming effect.
   结果显示聚醚改性有机硅消泡剂具有良好的消泡性能。