英语翻译1.Connect the rubber tubing to the gas tap2.Put the Buns
英语翻译 1.Connect the rubber tubing to the gas tap 2.Put the Bunsen burner on a heat-proof mat 3.Turn the collar to close the air hole. 4.Put the tip pf the gas lighter over the chimney.Then press to ignite the gas lighter and turn on the gas tap. 5.Open the air hole slowly to adjust the flame. 6.Turn off the gas tap after use.