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科学研究   

2025-06-26   British English
New Product will Boost the Energy Density of Li-ion Batteries, Part 2

Keywords:

Thus far, innovation on inactive components has mostly focused on shrinking them down, so that more electrode material can fit in the cell. But these long overlooked parts are the cool kids now, sa...

到目前为止,非活性组件的创新主要集中在缩小它们的尺寸,以便更多的电极材料可以装入电池中。但一位电池组件初创公司创始人表示,这些长期被忽视的部件现在很受欢迎。 阿贡国家实验室储能部门首席科学家孟雪莉表示,电解质才是真正的游戏规则改变者。...


2025-06-25   Video
Curiosity Gets a Gravimeter to Measure Rock Density

Keywords:

The Curiosity rover is truly an interplanetary swiss army knife— equipped with a slew of onboard instruments for investigating the Red Planet. The primary mission was two years, so we'r...

好奇号火星车确实是 一把星际瑞士军刀—— 配备大量机载仪器 调查这颗红色星球。 主要任务是两年, 所以我们现在进入几个扩展任务, 是的,我们不知道它会持续多久。 我们从来不知道,也无法预测, ...


2025-06-24   British English
New Product will Boost the Energy Density of Li-ion Batteries, Part 1

Keywords:

In their quest to build a better battery, researchers have blazed a trail through the elements of the periodic table. The earliest prototype cells ran on nickel and cadmium; successors have used ev...

为了制造出更好的电池,研究人员在元素周期表中开辟了一条新路。最早的原型电池使用镍和镉;后来的电池使用了从锌和铁到钠和铅的各种元素。所有这些元素都具备作为电池阴极的条件:即能够将电子从原子中剥离出来,转化为电流,留下带正电的离子。 然而...


2025-06-22   Pre-Intermediate
Rover Captures Rock Showing Possible Signs of Microbial Life

Keywords:

A Mars explorer operated by the American space agency NASA has captured a rock that scientists say shows possible signs of ancient microbial life. NASA said in a recent statement that the Perseveranc...

美国宇航局 (NASA) 运营的一名火星探测器捕获了一块岩石,科学家们表示,这块岩石可能显示出古代微生物生命的迹象。 美国宇航局在最近的一份声明中表示,毅力号探测器或漫游者于 7 月 21 日收集了这块岩石。毅力号团队的科学家将这块岩石昵...


2025-06-19   Video
The Construction Method That Can Prevent Skyscrapers From Sinking

Keywords:

- [Narrator] Big Ben (energetic electronic music) is tilting to the north and keeps leaning about a millimeter a year. The 58 story Millennium Tower in San Francisco has sunk over a foo...

- [旁白] 大本钟 (充满活力的电子音乐) 正在向北倾斜 并一直倾斜 每年一毫米。 58 层的千禧塔 在旧金山沉没了 自从它开业以来超过一英尺 2009 年根据诉讼。 和前建筑 这个 57 Stor...


2025-06-16   Pre-Intermediate
Evidence of ‘Rotten Egg’ Gas Found on Jupiter-like Exoplanet

Keywords:

Scientists say they have found evidence that the smelly molecule hydrogen sulfide exists in the atmosphere of a Jupiter-like planet. Hydrogen sulfide is the chemical compound that gives rotten eggs th...

科学家们表示,他们已经找到证据,证明这种臭味分子硫化氢存在于类似木星的行星的大气层中。硫化氢是使臭鸡蛋产生难闻气味的化合物。 这颗行星被称为 HD 189733b。它是一颗系外行星,这个术语用于描述存在于我们自己的太阳系之外的行星。它于 ...


2025-06-15   Video
Where Does the Periodic Table End

Keywords:

Scientists created the first artificial elements during World War II, and they were actually classified at first, and it was only afterward that they were allowed to announce the discovery ...

科学家创造了第一批人造元素 在第二次世界大战期间,他们实际上是 起初是机密,后来才 他们被允许宣布这一发现 这些新元素。 创建新元素时,基本的 idea 是你有一个目标 而你有一束其他的东西,并且 ...


2025-06-11   Video
Scientists Attempt to Replace BPA in Food and Drink Cans

Keywords:

A ubiquitous chemical called Bisphenol A, better known as BPA, coats the inside of many food and drink cans. This lining is 2 micrometers thick, less than 1/8th of the thickness of a human hai...

一种普遍存在的化学物质,称为双酚 A, 更广为人知的是 BPA,覆盖在许多 食品和饮料罐。 此衬里厚 2 微米,小于 人类头发粗细的 1/8。 它是金属和 确保 一罐苏打水会保留它的嘶嘶声和味道。 因为它便宜...


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