你猜对了，在太阳系以内最好的氦-3供应来自天王星的“天然气田”。
You guessed it; the best helium-3 supply in the solar system is from the "Gas Mines" of Uranus.
很多氦离子紧绕在星核附近，等到这一时代的到来才开始从新吸入气体。
"A lot of them held on to their cores, and they had to wait until this period was done before they could start bringing in gas again," Shull said.
这颗恒星曾和太阳一样，是颗“主序星”(“main sequence”)。它通过核聚变燃烧氢，从而产生氦。
The star used to be like the sun, a "main sequence" star that burns hydrogen by nuclear fusion, producing helium.
天王星大气的组成，是83%的氢，15%的氦和2%的甲烷等碳氢化合物虽然已发现的痕迹。
Uranian atmosphere, by composition, is 83% hydrogen, 15% helium and 2% methane although traces of other hydrocarbons have been found.
天王星大气的组成，是83%的氢，15%的氦和2%的甲烷等碳氢化合物虽然已发现的痕迹。
Uranian atmosphere, by composition, is 83% hydrogen, 15% helium and 2% methane although traces of other hydrocarbons have been found.
应用推荐