PB has been usually used as feed additive in animals with its special biological effects of calmness and hypnosis.

由于PB的镇静、催眠特殊生物学作用，常被用作饲料添加剂。

youdao

PB has been usually used as feed additive in animals with its special biological effects of calmness and hypnosis.

由于PB的镇静、催眠特殊生物学作用，常被用作饲料添加剂。

youdao