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Porous ceramic materials on the base of strontium zirconate were developed with zirconium dioxide,baddeleyite powder,and granular polysterol.

二氧化锆、斜锆矿粉、碳酸锶及粒状聚苯乙了锆酸锶多孔瓷材料。

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Abstract: The Gibbs free energy and critical reduction temperature of vacuum silicothermic reduction producing metallic strontium were calculated and analyzed by thermodynamics.

摘 要: 采学方法计算并分析真空硅法炼锶的反应自由能和临界还原温度。

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But another thing that's cool about it is that, most strontium doesn't start out as strontium.

但另一件很酷的事情是,大多数锶刚开始并不是这种元素。

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Strontium, man: It knows where you've been.

锶,伙计:它可知道你去哦。

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And then, the strontium you eat and drink gets incorporated into your teeth!

然后,你吃的和喝的锶会进入你的牙齿!

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But it left behind a slurry of other elements, including types of radioactive strontium, caesium, and technetium.

但它留下了其他元素,包括放射性锶、铯和锝。

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It's not getting any more new calcium, so the strontium ratio is set forever.

它不再获得新的钙,因此锶的比例永远固了。

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The enamel coating your teeth contains lots of calcium, and strontium is like calcium in a lot of ways.

牙齿上的牙釉质含有大量钙,锶在很多方面都和钙非常类似。

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But another thing that’s cool about it is that, most strontium doesn’t start out as strontium.

但另一件很酷的事情是,大多数锶并不是以锶开始的。

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For one thing, there's more than one isotope — or form — of strontium.

一方面,锶的同位素不止一种。

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It’s not getting any more new calcium, so the strontium ratio is set forever.

它不再获得任何新的钙,所以锶的比例永远不变。

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And the common ones in glow in the dark toys are zinc sulfide and strontium aluminate.

而夜光玩具中常见的有硫化锌和铝酸锶。

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Strontium, man: It knows where you’ve been.

锶,伙计:它知道你去

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Both the strontium and caesium emit high levels of beta rays, a kind of ionizing radiation, as well as a lot of heat.

锶和铯都会发出大量的β射线(一种电离辐射)和热量。

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For one thing, there’s more than one isotope -- or form -- of strontium.

一方面,锶的同位素不止一种。

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They use ytterbium or strontium – atoms that oscillate at visible light frequencies – and sync up lasers to the atomic oscillations for timekeeping.

他们使用镱锶——以可见光频率振荡的原子——并将激光与原子振荡同步以进行计时。

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For example, there was the leaking of highly radioactive water in 2016, and strontium and other radioactive substances were found to have exceeded normal standard in 2018.

例如,2016 年发生了高放射性水泄漏,2018 年发现锶等放射性物质超标。

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A few years ago, NIST built a strontium clock that broke the world record for precision – that’s how accurately a clock tracks atomic oscillations.

几年前,NIST 制造了一个锶时钟, 打破了世界精度记录——这就是时钟跟踪原子振荡的准确程度。

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Your teeth hold a lot of information about your life story, and scientists are learning how to read it, thanks to the properties of strontium.

由于锶的特性,你的牙齿包含了很多关于你的生活故事的信息,科学家们正在研究如何阅读这些信息。

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All you'd need to do is let me borrow a couple of teeth, so I could measure how much of the element strontium is in them.

你需要做的就是借我几颗牙齿,这样我就可以测量它们中锶元素的含量。

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Strontium aluminate is more expensive, but it has a longer persistence, which means it emits visible light more slowly, and glows longer after being energized.

铝酸锶价格较贵,但持久性较长,这意味着它发出可见光的速度较慢,充电后发光时间更长。

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All you’d need to do is let me borrow a couple of teeth, so I could measure how much of the element strontium is in them.

你需要做的就是让我借几颗牙齿,这样我就可以测量其中有多少元素锶。

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