A Cs referenced optical frequency comb system has been used to measure the center frequency of the 5s {sup 2}S{sub 1/2}-4d {sup 2}D{sub 5/2} transition at 445 THz in a single, trapped, and laser-cooled {sup 88}Sr{sup +} ion. The transition frequency {nu}{sub SD}=444 779 ...
The ministry of disasters reported that 9,240 people have been injured and more than 1,300 houses have been destroyedMonday 9 October 2023 11:48, UK Afghanistan Earthquakes This is a modal window. Video Unavailable At least 2,445 people have died and thousands more injured after a powerful ...
At least 2,445 people have died and thousands more are injured after powerful earthquakes hit Afghanistan on Saturday, according to the Taliban administration. The ministry of disasters reported that 9,240 people have been injured. More than 1,300 houses have been destroyed, it added. The latest...
2. I then inserted the swab into the test tube. 然后我把棉签插入试管中。 3.Gently and slowly swirled the swab 5 times. 轻轻地、缓慢地转动棉签5次。 4.Pressed it against the side of the tube. 将棉签贴紧试管按压。 5.With the swab inside, I pinched the outside of the tube against ...
In his landmark book, Design for a Brain, William Ross Ashby speculatesabout the possibility of creating a mobile homeostat "with its criticalstates set so that it seeks situations of high illumination." This talkexplores an embedding of Ashby's homeostat within a simulated robot andenvironment...
445 – My first at-home self testing 2 第一次在家做测试 2 2022-03-24 07:00:0013:59 3566 所属专辑:日常英语对话 | 每日一段最实用的英语 喜欢下载分享 声音简介 1. I repeated the previous steps in my other nostril with the same swab. 我用同一根棉签在另一个鼻孔里重复了上面的步骤。 2....
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The Kizil Thousand-Buddha Caves in China's Xinjiang are among the country's earliest large-scale grotto groups. Find out how researchers are making efforts to protect and preserve the 1,800-year-old grottoes. You may like Beijing skyline during early morning 2024 China Int'l Consumer Electro...
SiO_2 glasses synthesized at 355-445 deg. C and 2.0-5.5 GPa A series of SiO_2 glasses were synthesized by usingspectroscopically pure silica on the YJ-3000 multi-anvil apparatus at355-445 deg. C and 2.0-5.5 GPa. The... D Ding,H Xie,G Su - 《Chinese Science Bulletin》 被引量: ...