本演示器根据潜水艇的基本结构原理,经过改装制作而成,将浮沉体制成潜水员模样。 一、取材 1.60毫升废塑料药瓶和小容器各一只; 2.小号半红半白塑料圆球一只(姑娘头上装饰用,市场购买); 3.医用静脉注射专用废塑料管一根,长约需1米; 4.自行车气门芯二根,每根长约需70厘米。或用静脉注射专用废细软塑料管(直径约1毫米)连接而成,效果更好; This demonstrator is based on the basic structure principle of the submarine, and is made by refitting. The floating body is made into a diver’s appearance. 1. One 1.60 ml waste plastic bottle and one small container; 2. One small semi-red semi-white plastic ball (the girl’s head is used for decoration, the market purchase); 3. The medical waste injection special waste plastic pipe Root, about 1 meter long; 4. Bicycle valve core two, each about 70 cm long. Or use intravenous injection of special waste plastic pipe (diameter of about 1 mm) connected, better;