PBO and DEF had significant synergism to fluvalinate in the resistant and susceptible mites, and the synergism ratio was 3.23 and 1.67 fold in PBO, was 3.27 and 1.80 fold in DEF, respectively.是什么意思_PBO and DEF had significant synergism to fluvalinate in the resistant and susceptible mites, and the synergism ratio was 3.23 and 1.67 fold in PBO, was 3.27 and 1.80 fold in DEF, respectively.在线翻译_英语_读音_用法_例句