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本人根据自己的学习、观察和思考,收集整理了一组自然教具的制法。 1.烧瓶 将断了钨丝的大号灯泡螺口及充实物撬出,并小心地敲碎里面的玻璃支柱,倒出碎玻璃渣,这个灯泡就可作为烧瓶使用。
According to my own learning, observation and thinking, I collected and organized a set of natural teaching tools. 1. Flask Twist the bulb of the large bulb with the broken tungsten filament and pour it out. Carefully break the glass pillar inside and pour the broken glass residue. This bulb can be used as a flask.