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Before this, we all know that our country has the largest rare earth reserves in the world, about 44 million tons, followed by Mongolia with about 31 million tons, and Brazil with 2,200 tons. Thousands of tons of rare earths are called industrial gold.
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-196°C, which is a temperature that makes people feel very strange, and this number is the liquid nitrogen temperature at which umbilical cord blood hematopoietic stem cells are safely stored. So, why should umbilical cord blood be stored at this temperature? Can the quality and
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According to reports, China's import dependence on high-end scientific instruments ranks in the top three along with chips and oil, with the import dependence reaching 90%, which is higher than chips and oil. At a time when China's scientific research is advancing to the high end
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After death, due to the termination of the life process, the putrefactive bacteria that were parasitic in the human body during life lost the control of the human immune system and grew and multiplied crazily.
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The perigee of Mars is 55 million kilometers, and the apogee is a full 400 million kilometers. This is a planet that is very far away from us most of the time. Therefore, every time humans launch a probe, they have to choose the day carefully to prevent missing the most important
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This variant evolved from the BA.2 variant of the Omicron strain and is called a "second-generation variant". It has many "unusual" mutations and may be able to break through the immunity built by existing vaccines and strain infections. barrier, and the infection speed is relati
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At present, people may already know what genetic metamorphosis is through the Internet, TV and other related channels, but I am afraid many people do not know much about the related harm caused by genetic metamorphosis. Next, I will make a simple analysis for everyone.
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We need to teach children how to think, not what to think. The initiative in the previous dialogue is basically given to the child, and all the answers are his own, not those you tell him. When a child comes up with some ideas, practices them, and gets feedback on the results, he
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The hot summer has arrived, and the temperature is gradually rising. Both mothers and babies feel very hot under the high temperature steaming and baking. At this time, air conditioners have become our must-have artifact in summer. So, can babies use air conditioners? This issue
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Many parents will lament that my child is always unconscious and always takes his time doing things. He always fails to abide by the rules set for him and breaks the rules if he is not careful. The punishment is short-lived and ineffective, and I don’t know where to start when it
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Should I buy a piano for my child who is just learning piano? A parent told me that he was very confused about whether to buy a piano for his child who was just starting to learn piano, because he was afraid that if he bought a piano, his child would not be enthusiastic about lea
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Breastfeeding is so painful, why do mothers insist on gritting their teeth? Just look at the advantages of breast milk and you will understand. We all know that breast milk is the best source of nutrition for babies, so much so that the World Health Organization recommends that m
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