BG 电子

diàn zǐ electronic; electron (particle physics)

BG 电子

diàn zǐ electronic; electron (particle physics)

官方

guān fāng government; official (approved or issued by an authority)

网站

wǎng zhàn website; network station; node

进入

jìn rù to enter; to join; to go into

：bb999net mad