制作方法取透明塑料饮料瓶一个，将瓶底用开水烫化胶后取下，将瓶体按１５～２０ｃｍ长度剪下中间一段或有底一段均可，洗净擦干备用。取塑料板或泡沫板（２～３ｃｍ）做一个与瓶体大小相同的圆，将制做好的生物标本用昆虫针或大头针（也可用细铁丝）固定在圆中心，将剪下... The production method takes a transparent plastic beverage bottle, and the bottom of the bottle is removed with boiling water and the plastic is removed. The bottle body can be cut to a length of 15 to 20 cm or a bottom portion of the bottle can be washed and dried for use. Take a plastic plate or foam plate (2~3cm) to make a circle with the same size as the bottle body. The prepared biological sample will be fixed in the center of the circle with an insect needle or a pin (a thin wire can also be used) and will be cut...