单词:phosphate optical glass
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pH - a measure of how acid or alkali a solution is. As the pH gets lower, the solution is more acid. At a pH of 7 the solution is neither acid nor alkali. pH is the inverse of the logarithm of the con
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Batteries of the future need to deliver more energy, and they need to be smaller. Researchers at MIT think they have developed a technology that can, a
[0:0]occupy ocurrence odd offend占领,占用 发生的事情,事件 奇怪的,古怪的 冒犯,得罪,违反 [0:40.7141]offensive omit onion opening冒犯的,无礼的 省略,删节 洋葱 洞,孔,开口 [1:21.2363]opera operational operator opponent歌剧 运转的,即可使用的 话务员,经营者
A technology company is developing a lie detector app for smartphones that could be used by parents, teachers - and internet daters. 一家科技公司正在研发一款面向智能手机用户的测谎软件,家长、教师甚至线上约会者都可
We all know time is a construct, and right now, it's kept by the very precise tick of an international network of around 500 atomic clocks. 我们都知道时间是个复杂的概念。目前,世界上有一个由大约500台原子钟组成的网络,
China's Tibet Autonomous Region is about to achieve a universal coverage of fibre-optical broadband service ahead of its schedule. As China further rolled out its universal broadband project, Tibet's broadband service is looking to reach 98% of admin