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Recently, a netizen broke the news that a "red tide" phenomenon occurred in some waters in Fujian. The ocean in the video was dyed blood red, covering an area of about ten square kilometers. The sea water dyed red is sticky and exudes a fishy smell. Not only that, there is an o
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Elon Musk introduces the Dragon V2 spacecraft on May 29, 2014 in Hawthorne, California. In May 2020, millions of Americans witnessed two NASA astronauts: Robert Behnken and Douglas Hurley , aboard the Crew Dragon spacecraft, flying to the International Space Station at a speed of
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When it comes to Hall electric thrusters, everyone always likes to describe them as "blowing a piece of paper". For example, the four Hall electric thrusters equipped in the core module of the "Tianhe" space station in my country have a single thrust of only 80 millinewtons, and
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Rare earth is the general name for the lanthanide series elements and seventeen metal elements including scandium and yttrium in the periodic table of chemical elements. It was first isolated from the ore by Finnish chemist Gadolin in 1794. It mainly exists in nature in the form
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The Earth's core is cooling faster than we previously predicted, which could make things messy. But how did scientists discover this event? If the core temperature really drops, what impact will it have on our planet? In order to facilitate the understanding of this important dis
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Good brothers make money together, but what should they do if their investment money is defrauded? Unexpectedly, this so-called investment institution is a scammer, and their money is wasted. He invited his friends to make money together but was cheated. The two went to court.
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