liquid helium

基本解釋

Liquid helium cools infrared detectors, nuclear reactors, and the superconducting magnets used in MRI machines, too.
液氦也用來冷卻紅外線探測器，核反應(yīng)堆，以及核磁共振成像器械的超導(dǎo)磁體等。
For instance, at low temperatures liquid helium’s properties change dramatically, becoming a “superfluid” that can overcome friction.
比如，在低溫時，液態(tài)氦的性質(zhì)產(chǎn)生劇烈變化，成為一種能克服摩擦“超流體”。
It turns out that particles in crystals and bubbles in liquid helium follow the same laws as some of the fundamental particles of nature.
事實(shí)證明晶體中的粒子、液氦中的氣泡和自然界中一些基本粒子一樣，遵循著同樣的原理。

We use a liquid helium. And so in order to make a liquid helium, you can't take helium at room temperature and do this, because if you did, you would just heat it up, because the room temperature is above the inversion temperature, so Joule-Thomson would heat up the helium.
為了得到液氦,不能再常溫,做這個實(shí)驗(yàn),否則就是加熱氦氣，因?yàn)槭覝馗哂谒霓D(zhuǎn)變溫度,所以焦耳-湯姆孫，實(shí)驗(yàn)會加熱氦氣。
麻省理工公開課 - 熱力學(xué)與動力學(xué)課程節(jié)選
So you need first to take the liquid helium and cool it below 53 degrees Kelvin before you can do the Joule-Thomson to cool it even further to make liquid helium.
我們首先需要,把溫度江都53k一下,然后利用焦耳-湯姆孫實(shí)驗(yàn),來繼續(xù)冷卻它。
麻省理工公開課 - 熱力學(xué)與動力學(xué)課程節(jié)選
You take your room temperature liquid helium and you cool it with liquid nitrogen to 77 degrees Kelvin, the new, you're not quite there yet 77k unfortunately right? Then you take hydrogen you cool it would liquid nitrogen to 77, then you can use your hydrogen gas.
首先要有常溫的氦氣,拿液氮把它冷卻到77k，那個新來的7,你不坐在那兒，對吧？,然后用液氮把氫氣降溫到,然后就可以使用這個氫氣了，想要用氫氣來做焦耳-湯姆孫實(shí)驗(yàn)。
麻省理工公開課 - 熱力學(xué)與動力學(xué)課程節(jié)選

However, the most interesting and novel aspect of Unpartial is the search analysis that powers the website, called Liquid Helium.
FORBES: Is This The Future Of Search?

液氦
The Neutral Beam Injection (NBI) system requires a clean high vacuum environment. The liquid helium cryocondensation pump with high pumping speed is an ideal vacuum obtain device.
中性束注入系統(tǒng)要求有潔凈的動態(tài)高真空環(huán)境，大抽速液氦冷凝泵是滿足此要求的理想真空獲得設(shè)備。
物理學(xué)
液態(tài)氦
液氦
液體氦