1. ultra short wave communication 
   超短波通信
2. Living molecules are also damaged by X-rays, and many of them by ultra-violet rays. So they are not likely to exist on a planet close to the sun or any other stars, where there is no atmosphere to keep off these radiations. 
   有生命的分子会被x射线破坏，其中许多还遭到紫外线的破坏，所以在靠近太阳的行星上，或没有大气层阻挡这类辐射的星球上，不可能存在有生命的分子。
3. dynamic ultra-high pressure technique 
   动态超高压技术
4. solar extreme ultra-violet burst 
   太阳远紫外线爆发
5. techniques for ultra-low temperature 
   超低温技术

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