论文部分内容阅读
你知道你养的小仓鼠一分钟需要吸入多少氧气吗?你知道你床头的一棵小仙人球一天会为你释放多少氧气吗?就让我们一起来动手制作一个耗氧量容量仪(图1所示),有了它,你就会知道小仓鼠每分钟的耗氧量,还有小绿植在光合作用能为我们制造多少氧气。我们首先要准备如下制作材料:塑料阀门,塑料瓶(可用废弃饮料瓶等),塑料注射器,催化剂,数字实验室系统,数字温度计,封闭式广口瓶等。制作步骤如下:1.我们将塑料瓶上半截去掉,
Do you know how much oxygen a little hamster you inhale for a minute? Do you know how much oxygen a small prickly pear on your bed will release for you a day? Let’s work together to make an oxygen capacity meter (Figure 1 ), With which you will know how little a hamster consumes oxygen per minute and how much light green plants produce for our photosynthesis. We first need to prepare the following materials: plastic valves, plastic bottles (such as disposable beverage bottles, etc.), plastic syringes, catalysts, digital laboratory systems, digital thermometers, closed jars and the like. Production steps are as follows: 1. We will remove the plastic bottle half,