如果第一届奥运会的选手穿越到今天，会对会场上哪些科技感到震撼？
提名撑杆跳的杆子~
勘误： 之前发布的内容里，有关于1904年奥运会上日本选手富士佐间代“爬杆跳”的描述，感谢知友 @Petrushka 提醒，这个人是虚构的，1904年奥运会只有12个国家参赛，日本没参加，特此勘误。
关于这件事，可以看这个回答 富士佐间代的“爬杆跳”传说，这个故事是纯粹编造的吗？
查了一下国际奥委会官网，1904年奥运会撑杆跳的获奖情况是这样的：
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为什么草莓这种水果一旦做成果汁或零食，味道闻起来没有那么清新？甚至有点臭臭的？
这不是题主自己的问题，是因为两种「草莓味」确实有差异。这个差异可能由两种因素造成：
- 草莓本身，在进行热加工的过程中，风味就会变化、损失。
- 有些草莓果汁饮料、草莓饼干中的「草莓味」可能主要来自草莓香精而不是草莓本身。香精的味道很难达到 100% 的相似程度。
下面分别详细阐述一下。
1. 「草莓味」到底包括哪些物质？我们能吃到「草莓味」，本质上是因为草莓里富含各种各样的挥发性的香气物质，这些香气物质进入鼻腔以后，分别刺激不同的嗅细胞，神经信号传导到大脑的嗅觉中枢，我们就会闻到「草莓味」。
那么，草莓本身的特征香气物质有哪些呢？其实相当复杂。有研究在 20 种不同的草莓中发现了共 181 种特征性的风味化合物[1]。它们包括：
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数学教授教体育把 9 名校队选手送进巴黎奥运会，这是怎么做到的？数学对游泳的贡献能有多大？
体育课来了数学老师，数学老师一来，校队还直接包揽世界级的奖牌？这样的梦幻联动是真实的，而且可能将成为体育界的常态。
事情要从美国游泳圈的“卷”说起。
数学教授创造奇迹
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Exam Numbers
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为什么不禁止ENF板材？
这个朋友应该是人造板乃至家居行业外的，对人造板不了解也属于正常。之前看到我的老朋友高老师 @话唠咖啡匠 看了这个问题很生气哈哈，我也来凑凑热闹，针对您的疑问我简单说几句供参考。
ENF 板是最垃圾的板材，没有握钉力，没有强度，不耐潮，释放甲醛。
ENF 只是人造板甲醛释放等级之一，和您说的握钉力/物理力学强度/耐潮耐水都没有直接的关系，对于最后一个释放甲醛的问题，那也是常规板材中表现极好的，一些情况下甚至可能比很多实木板材的甲醛释放量还要低。
对于握钉力与物理力学强度来说，主要取决于板材的结构单元形态与密度等因素，好的 ENF 级人造板完全具有足够的握钉力和强度，甚至，可能比实木板材的要更好，具体要看你拿什么板和什么木来比。
对于耐潮耐水性，采用改性酚醛树脂很容易实现 ENF 级板材的制造，那酚醛系树脂人造板耐气候性如何呢，简 … ⌘ Read more
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