How to distinguish male and female cockroaches: Male cockroach is relatively thinner but longer, with a ventral spine and fully developed wings reaching the rear; Female has shorter wings and no ventral spine.

 
  • 蟑螂雌雄的区分:雄虫体形比较瘦小,细长,翅发达至尾端,具有腹刺;雌虫翅较短,无腹刺。
今日热词
目录 附录 查词历史