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教材实验“比较呼出和吸入气体中二氧化碳含量的变化”实验原型存在一些不足之处,通过对实验原型进行分析、评价、改进和创新,避免了实验的失误,实验操作更简便,实验效果更明显。
Textbook experiment “Comparison of exhaled and change of carbon dioxide content in inhaled gas” experimental prototype has some shortcomings. By analyzing, evaluating, improving and innovating the experimental prototype, it avoids the mistakes of the experiment, the experimental operation is more simple and the experimental effect More obvious.