一、仪器的结构和制作: 用二支15×120(15×150也可以,但前者更好)毫米的九五料或GG—17料的玻璃管(或同样规格的试管)在煤气灯上进行粘接和封底,玻璃管封底的接口处的厚度为2毫米,在接口处的两侧30毫米处在煤气灯上将两侧的试管弯成150°～170°角度。 在弯口处(即离粘接处30毫米处)刺个三角刺,三角的宽为10毫米,高为5毫米。刺个三 First, the structure and production of the instrument: Use two 15x120 (15x150 can also, but the former is better) millimeter nine or GG-17 material glass tube (or the same size test tube) on the gas lamp Bonding and back cover, the thickness of the interface at the back of the glass tube is 2 mm, and the test tubes on both sides are bent at an angle of 150° to 170° on the gas lamp at 30 mm on both sides of the interface. A triangular thorn is pierced at the bend (ie, 30 mm from the bond). The triangle has a width of 10 mm and a height of 5 mm. Thorn three