单词：isocandelas
[光] 等烛光
等光强
等光强
单词：isocandelas 相关文章
What makes people dizzy when they spin? Rolling down a hill or spinning around in endless circles causes dizziness or vertigo because hair-like sensory nerve cells in our ears send wrong messages to our brain. The motions of our bodies are detected b
发表于:2019-02-13 / 阅读(53) / 评论(0)
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