If you’re a few meters away from a smartphone, you'll experience a mutual force of a few piconewtons.
如果你离智能手机几米远,你会感受到几皮牛顿的相互作用力。
单词 | piconewtons |
例句 |
原声例句
TED-Ed(视频版) If you’re a few meters away from a smartphone, you'll experience a mutual force of a few piconewtons. 如果你离智能手机几米远,你会感受到几皮牛顿的相互作用力。 |
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