英语语法分析

It contains resmethrin, piperonyl butoxide and a petroleum distillate.

它含有灭虫菊，增效醚和石油馏出物。

Fish were also pretreated with piperonyl butoxide (PBO) or triphenyl phosphate (TPP) and then exposed to fenitrothion.

另一些鱼在接触杀螟松之前分别用胡椒基丁醚(pbo)和磷酚三苯酯(TPP)做预处理。

By comparing different synergists, we found that the synergism of multi-function synergist 940 was superior to that of imported piperonyl butoxide.

经比较，多功能九四○增效剂的增效作用优于进口的增效醚。