本生灯

běnshēngdēng

Bunsen burner

* * *

Bunsen Burner

【化】 Bunsen burner

* * *

Bunsen burner

* * *

ben3 sheng1 deng1

Bunsen burner

* * *

本生燈|本生灯 [Běn shēng dēng] ► Bunsen burner