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Friends, the "Question and Answer Series on VOCs Popular Science" has started in the previous issues. The Environmental Protection Officer has led everyone to understand what impact VOCs emitted by plants have on the atmospheric environment? Do different types of plants emit the
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Different from other creatures, our ancestors chose a very unique evolutionary route, with the brain as the core. Because of this choice, humans are now the "rulers" of the earth and have absolute dominance. Unless all other creatures on the earth unite to attack humans, then eve
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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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Do you see fallen hair on your pillow every morning when you open your eyes? Do you experience a large-scale hair "farewell party" when you comb your hair in front of the mirror? Hair loss makes hundreds of millions of people anxious. Among them, androgenic alopecia is the most c
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Time flies. It has been more than a year since "Chang'e 5" returned to Earth. Chinese scientists are still making new important discoveries by studying the "native products" it brought back. For example, some time ago, scientists from the Chinese Academy of Sciences discovered a
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##Power Grid# If you are engaged in high-voltage power work, you may be exposed to GIS. These three letters are the English abbreviation of gas insulated fully enclosed combined electrical appliances. It can also be called "SF6 fully enclosed combined electrical appliances". Why
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On July 5, the Wuhan Smart Geographic Information Industrial Park opened in the Huafa International Enterprise Building, and the construction of the social application node of the Hubei Provincial Satellite Center was launched in Hanyang. Map navigation, logistics inquiry, land r
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In 1994, Bill Gates spent about $30 million to purchase Leonardo da Vinci's "Code Leicester," a famous manuscript that records Leonardo da Vinci's work on astronomy, mechanics, botany, mathematics, and Sketches and ideas for subjects such as architecture. Why spend so much money
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Our solar system is located at the center of a relatively empty region of space. This cavity has an extremely low particle density, at least 10 times lower than the average density of the interstellar medium in our galaxy. This cavity, known as the local bubble, is where our sun
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We are no strangers to shooting stars. After all, making a wish on a shooting star is a romance recognized all over the world, regardless of national boundaries and cultures. However, meteors generally occur at night. Have you ever seen a meteor phenomenon occur in broad daylight
A huge explosion was heard in the sky in the United States, and a large fireball flew past at a high speed of 24,587 meters per second.
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Chang'e-5 returned to Earth with "fresh" lunar soil samples. While we are still immersed in the joy of the lunar exploration project, NASA in the United States cannot sit still. Their director suggested that China share the soil brought back by Chang'e 5, just like they did with
NASA director made suggestion: China should share Chang'e 5 lunar samples, just like Apollo
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The ten-year ban on fishing in the Yangtze River has initially yielded results. A large number of silver carp have appeared in the river, and the four major species of fish are also flourishing. However, with good news comes trouble, and the explosive growth of silver carp shows
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Many people don't know why astronauts wear spacesuits even in the return capsule when they return to Earth. Since Gagarin entered space in 1961, more than 500 astronauts have launched into space to perform missions, of which 22 astronauts died during the mission.
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Entropy is an important concept in thermodynamics, but it is also a difficult concept to understand. As my college physics teacher often said: There are (probably) only 4 or 5 people in this world who really understand entropy, and I don’t belong to them. Compared to other quanti
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Geometrically complex parts are manufactured using wax casting. However, high-quality castings are not always ensured when using this method: defects often form on the product surface. Chemists from the Perm Polytechnic University suggested a technique that would avoid irregulari
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Chen Shih-chung-jin, commander of Taiwan's Epidemic Command Center, said that this question is difficult to answer. Countries around the world will gradually lift their lockdowns around May, but this is mainly because of the current situation. Taiwan has worked hard to fight the
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Overseas Network, July 13 (Xinhua) On the 11th local time, the U.S. Federal Aviation Administration announced that multiple undelivered Boeing 787 "Dreamliners" were found to have production defects. Previously, Boeing had suspended the delivery of 787 passenger aircraft, leaving
Boeing 787 passenger plane was found to have production defects, and delivery of about 100 aircraft was suspended
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According to reports from the US Consumer News and Business Channel, on the 12th local time, the US Federal Aviation Safety Administration stated that it had discovered another manufacturing defect on the 787 Dreamliner that Boeing has not yet delivered to customers.
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You must have heard the biggest news last night. Let’s take a look at some of the things you are most concerned about after the divorce of Amazon CEO Bezos - the world’s richest man Bezos divorced his wife @Sina Finance [25-year marriage broke down, Amazon CEO Bezos decides to di
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Premier Li Keqiang recently signed an order of the State Council to announce the revised "Regulations on the Supervision and Administration of Medical Devices", which will come into effect on June 1, 2021.
Regarding marriage registration, driving license test, pension insurance... Starting from June, these new regulations will affect your and my life!
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As they grow older and have their own families, they have to set up separate households, separate them from their parents' household registrations, and create new household registration files. Focusing on people's livelihood means focusing on development. In recent years, reducin
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