Explanation: What's causing those odd rings in supernova 1987 A?

At least one supernova occurs per decade in our galaxy.

在我们的星系中每10年至少有一颗超新星出现。

A supernova is the last stage of stellar evolution, and is a violent astrophysical phenomena.

超新星是恒星演化的最终阶段, 是最激烈的天体物理现象.

Evolution of the central debris of Supernova 1987 A taken with the Hubble Space Telescope.

由哈勃太空望远镜拍摄的超新星1987A中心残骸的演化.

In 1987, the brightest supernova in recent history occurred in the Large Magellanic Clouds.

1987年, 近代历史上最明亮的超新星出现在大麦哲伦星系.

Supernova 1604, the most recent supernova to be observed in the Milky Way.

1604年的今天, 1604号超新星被观察到,这也是银河系中迄今为止被观察到的最后一颗超新星.

Susan Storm: Johnny , you were at 4,000 Kelvin . Any hotter, and you are approaching supernova.

苏珊: 强尼, 你已经到4000开了,再高些你就快成超新星了.

Now the galaxy full of gas and dust, which could hide a distant supernova optically.

现在这个充满气体和尘埃的星系能够在视觉上遮住远距离的超新星.

Among them , supernumerary teeth and root dilacerations are two common local factors.

此外许多先天的遗传疾病及营养失调也可能会引发或合并有多颗牙齿不能顺利萌出的情形.

The supernumerary milkers of the lush green season had been dismissed.

牧草茁壮肥美的时季里,临时雇的挤奶工,也都下工了.

Conclusion: Intravenous anesthesia is good for extraction of embedded supernumerary teeth in children.

结论: 静脉麻醉可以使手术平稳实施,术后可以很快离院,有利于儿童埋伏牙的拔除.

Objective : To summarize the key points in extraction of supernumerary teeth in children under intravenous anesthesia.

目的: 探讨在浅静脉麻醉下儿童埋伏多生牙拔除的临床技术要点.

Methods Slices from 32 supernumerary teeth were observed under light microscope and compared with normal teeth.

方法选择32颗多生牙,在光镜下观察其切片及磨片的组织学结构并与正常牙对照.

Removing supernumerary weight, additive weighing, alarm to trouble , counting function is it's primary functions.

具有去皮重 、 累计称量 、 故障报警 、 计数功能.

By the Analysis of the Water Being Supernutrition, the Countermeasure and Engineering Measure Was brought forward.

本文通过对劳动湖水质富营养化的分析, 提出了相应的控制对策及工程措施.

Such commitment derives from superordinate goals.

这种奉献来自崇高的目标.

The interaction of ECo-superoxide dismutase ( ECoSOD ) with dine in buffer has been studied by UV-VIS spectroscopy.

应用紫外可见吸收光谱研究了钴超氧化物 歧 化酶在缓冲溶液中与组氨酸的相互作用.

According to medical experts'study the analysis, Qianlong Xianmao Liquor contains Superoxide dismutase ( SOD ).

经许多医学专家研究分析, 茅台镇生产的仙茅酒含有超氧化物歧化酶 ( SOD ).

Oxygen free radicals are normally removed in our bodies by the superoxide dismutase enzymes.

氧自由基一般被超氧化物歧化酶从我们体内清除.

Superoxide dismutase is an ubiquitous antioxidant enzyme in aerobic organisms.

超氧化物歧化酶是需氧生物中普遍存在的酶性抗氧化剂.

A rational definition of dynamic strength is given for static load superposed on dynamic load.

针对动静叠加的加载方式,给出一种合理的动强度的表示方法.