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为什么微波炉加热食物不均匀

Microwaves heat food by making water molecules vibrate rapidly and generate heat.
But these waves form standing patterns inside the oven, creating hot and cold spots.
The center of a turntable rotates food to pass through different wave intensities.
Dense or thick foods—like a potato—absorb energy unevenly because microwaves penetrate only 1–2 cm deep.
Cold zones often occur where wave peaks cancel out, especially in corners or large flat areas.
Metal reflects microwaves, so foil or containers with metallic trim cause dangerous arcing and shielding.
Stirring soup or letting food rest after heating helps distribute heat more evenly via conduction.
Unlike ovens that warm air gradually, microwaves target molecules directly—so timing matters more than temperature.

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

Microwaves heat food by making water molecules vibrate rapidly and generate heat. 微波通过使水分子快速振动并产热来加热食物。
The center of a turntable rotates food to pass through different wave intensities. 转盘中心旋转食物，使其经过不同强度的微波区域。
But these waves form standing patterns inside the oven, creating hot and cold spots. 但这些微波会在炉腔内形成驻波，造成局部过热和过冷。

这篇中文题目最接近哪一句？为什么微波炉加热食物不均匀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？微波通过使水分子快速振动并产热来加热食物。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 Microwave Heating Is Uneven How to cook noodles A maths worksheet

Microwaves heat food by making water molecules vibrate rapidly and generate heat.

Microwaves heat food by making water molecules vibrate rapidly and generate heat.

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：Microwaves heat food by making water molecules vibrate rapidly and generate heat.