SPF is a nonlinear scale of how much UVB radiation is needed to give protected skin a sunburn.
SPF是一种非线性的比例,关于的是造成晒伤的b波紫外线的量。
单词 | nonlinear scales |
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原声例句
双语版 TED-Ed 演讲精选 SPF is a nonlinear scale of how much UVB radiation is needed to give protected skin a sunburn. SPF是一种非线性的比例,关于的是造成晒伤的b波紫外线的量。 Life Noggin And this is usually represented by the nonlinear decibel scale, where a normal conversation is around 60 decibels and a rock concert is around 120 decibels. 这通常由非线性分贝标度表示,其中正常的对话约为 60 分贝,摇滚音乐会约为 120 分贝。 |
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