The average FPD at a distance of 1 m from the dyed Bt cotton plot to its east, south, west and north was estimated to be 44.8%, 48.9%, 57.1% and 21.5%, respectively, and declined with increasing distance in the four directions.是什么意思_The average FPD at a distance of 1 m from the dyed Bt cotton plot to its east, south, west and north was estimated to be 44.8%, 48.9%, 57.1% and 21.5%, respectively, and declined with increasing distance in the four directions.在线翻译_英语_读音_用法_例句