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- Before that time, a haze of neutral hydrogen gas shrouded these first beacons in the infant cosmos. 再往前推进,则是一团团中性氢气所形成的薄雾,包裹著早期宇宙中第一批诞生的恒星。
- The bubbles will proliferate and merge, eventually clearing intergalactic space of neutral hydrogen [see box at right]. 气泡边界的清晰度,将能解答造成再游离的,究竟是大质量恒星还是黑洞。
- On otherwise, if neutral hydrogen content is very high, the refadiation from dust produces no effect on the 3K cosmic microwave background. 反之,如果中性氢的含量很高,则尘埃的再辐射将不可能使3K宇宙微波背景谱产生畸变。
- As the universe continued to expand, the temperature of the cosmic soup finally dropped below 2,967 Kelvin. Electrons began to combine with protons to form neutral hydrogen. 当宇宙不断膨胀,宇宙的温度亦随之下降,当温度低于2,967绝度温度时,电子和质子便会开始结合而成为中性的氢原子。
- As the first stars flickered on, their ultraviolet light excited neutral hydrogen atoms around them, causing the gas to emit a faint radio signal at 1,420 megahertz. 当第一批诞生的恒星开始闪烁,它们发出的紫外光会激发周围的中性氢原子,使这些气体发出频率为1420百万赫兹的微弱电波讯号。
- Using binary encounter approximation and Thomas Fermi approximation,charge stripping cross sections for hydrogen like ions Li 2+ and C 5+ by collision with neutral hydrogen and helium atoms are calculated. 使用双撞近似(BEA)和托马斯-费米近似(TFA)计算了类氢离子Li2+和C5+与中性原子H和He碰撞的电荷剥离截面。
- According to the prevailing view, once the IGM had cooled from its hot, ionized state to a colder mixture of neutral hydrogen and helium, it offered no effective resistance to gravity. 一般的观点认为:IGM一旦从它那炽热、游离的状态冷却成温度较低的中性氢和氦的混合物,它将无法有效对抗重力。
- Neutral hydrogen atoms leading the way 主要是中性氢原子
- Water contains hydrogen and oxygen. 水含有氢和氧。
- She had the sapphire set in a gold ring. 她把那枚蓝宝石镶在金戒指上了。
- The diamond ring dazzled with brilliancy. 这只钻石戒指闪耀夺目。
- She wears a diamond ring on her left hand. 她左手上戴着一枚钻石戒指。
- He has a rather neutral character. 他品性平平。
- Our family reunions are always three ring circus. 我家合家团聚的场面总是热闹非凡。
- That country remained neutral in the war. 那个国家在那场战争中保持中立。
- I am sorry-she's out. Can you ring again later? 对不起-她出去了。你过些时候再打电话来好吗?
- Put the gear lever in the neutral position. 把变速杆推到空挡的位置。
- The boys and girls made a ring round us. 男孩和女孩围着我们站了一圈。
- Please ring for the attendant if you need anything. 如果需要什么,请按铃找服务员。
- Water is composed of hydrogen and oxygen. 水由氢和氧组成。