1、You will hear Miss Wang give instructions on how to use a Bunsen burner.
你將聽到王小姐給出如何正確使用煤氣燈的說(shuō)明。

2、Bunsen burner invented by German chemist Robert Bunsen.
德國(guó)化學(xué)家羅伯特·本生發(fā)明本生燈。

3、First, I take a beaker of water and heat it gently over a Bunsen burner.
首先，取一燒杯的水，在本生燈上微微加熱。

4、Then with a Bunsen burner the surface is thoroughly seared.
然后，用本生燈徹底燒灼表面。

5、STUDIES ON BUNSEN AND SMITHLL FLAMES
本生燈火焰和Smithll火焰的實(shí)驗(yàn)研究