E23.1121

Cov lus piav qhia luv luv:


Khoom Nthuav dav

Cov khoom lag luam

E23.1121| D / |? Qhov tseem ceeb hauv Ethene Molecular Demo.

  • Yav dhau los:
  • Tom ntej:

  • Sau koj cov lus ntawm no thiab xa rau peb