STEM与日常科技·英语30篇（6）

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为什么晴朗凉爽的天气更利于太阳能发电

Solar panels convert sunlight into electricity using photovoltaic cells made of silicon.
Though bright sun is essential, high temperatures actually reduce their efficiency by 0.3–0.5% per degree Celsius.
On hot days, electrons in the silicon become too energetic, causing more resistance and heat loss.
Cooler air improves heat dissipation, helping cells maintain optimal voltage and current output.
That’s why cities like Portland or Berlin often get more annual energy per panel than hotter places like Phoenix—despite fewer sunny hours.
Modern inverters also adjust voltage dynamically to match changing panel performance in real time.
Dust, snow, or shading from trees can cut output more than heat, so regular cleaning matters too.
Engineers now design bifacial panels that capture reflected light from rooftops or ground surfaces.
Researchers are testing perovskite layers to boost efficiency without raising operating temperatures.
So next time you see solar panels gleaming on a crisp autumn morning, remember: cool + sun = peak power.

听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。

Solar panels convert sunlight into electricity using photovoltaic cells made of silicon. 太阳能电池板利用硅制光伏电池将阳光转化为电能。
Researchers are testing perovskite layers to boost efficiency without raising operating temperatures. 研究人员正在测试钙钛矿层，以提升效率且不升高工作温度。
Cooler air improves heat dissipation, helping cells maintain optimal voltage and current output. 较冷的空气有助于散热，帮助电池维持最佳电压和电流输出。

这篇中文题目最接近哪一句？为什么晴朗凉爽的天气更利于太阳能发电一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？太阳能电池板利用硅制光伏电池将阳光转化为电能。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） Why Solar Panels Work Better on Cool, Sunny Days How to cook noodles A maths worksheet

Solar panels convert sunlight into electricity using photovoltaic cells made of silicon.

Solar panels convert sunlight into electricity using photovoltaic cells made of silicon.

第一版：录下来、回听、再听标准音。系统打分以后再加。

用今天的表达，自己说一句。

例子：Solar panels convert sunlight into electricity using photovoltaic cells made of silicon.