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The metallurgical industry in the Qing Dynasty exceeded the level of the mid-Ming Dynasty. According to statistics from the Geological Survey, the national output of iron smelting by the old method was more than 170,000 tons in 1919, and the output of iron in the late Qing Dynast
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Recently, researchers such as Broad Institute of MIT and Harvard David Liu published a review in Cell to introduce the research progress in this field.
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We’ve seen blue skies on sunny days, black skies on rainy days, gray skies on cloudy days…but what about green skies? It seems that it is only possible in science fiction movies, or on some alien planet beyond the earth. Will there be green skies on the earth we live on? The worl
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The spring itself is elastic. After being compressed, the spring will have the tendency to return to its initial state, and therefore has elastic potential energy. We can think of it as the energy stored in the overall system of the spring. So the question is Question: If a compr
Put a compressed spring into strong acid. After the spring dissolves, where does the energy of the spring go?
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my country's first artificially bred rabbit cat turns one year old. On July 7, the Internet celebrity "Elder Snake" in Xining Wildlife Park is one year and two months old. "She" is my country's first artificially bred rabbit cat. "She" "It not only fills the gap in the successful
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This year's high temperature weather has left a deep impression on people. Since June, heat waves have occurred in many places in our country. Starting from July 6, a new round of heat waves is sweeping through parts of the northwest, north and south of our country. It is expecte
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Chinese people have a special emotion for the moon. Chang'e flies to the moon, the Moon Rabbit makes medicine, we are strangers in a foreign land, but we still share the beauty of the moon. The moon represents my heart. Throughout the ages, many thoughts and emotions have been pl
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In modern astronomical theory, the formation of important celestial objects such as double black holes, double neutron stars, and double white dwarfs are the result of the evolution of the shared envelope of binary stars. A few days ago, the research team of Academician Han Zhanw
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Human beings cannot prevent aging, but they can use chips to store brain information, give up their physical bodies, and resurrect with the help of robot bodies. This is the future immortality of mankind, which is the immortality we have been pursuing.
From the machine age of unmanned factories to humans giving up their physical bodies and returning to eternal life
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As we said before, oracle bones are keel bones and belong to the fossil category. So the first question is, did these fossils appear first and then people carved them on them, or did people find these bones first and carve words on them, and then these bones gradually evolved int
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Pictured above is Physarum polycephalum, a protist, specifically a slime mold. The term "slime mold" does not refer to a specific single group, but is a broad term referring to several types of eukaryotes that behave similarly. Regardless, they possess intelligence, although it l
Intelligent slime mold
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01. Nostalgia is a spaceship heading to Mars. ——Douyou 02. Since childhood, I have been taking care of the stars of all generations alone. ——Bai Helin's "Loneliness" 03. The stars should laugh, the universe is a remote place anyway. ——Pasternak 04. All my desires and contemplatio
Golden sentence#星星——All my desires and contemplations are the slowly exhaled air currents of this universe.
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Today, an insight into the vision of a once young cosmic artist shows the dust continuum and molecular lines of carbon monoxide and water seen in the pair of SPT0311-58 galaxies. (Image source: ALMA (ESO/NAOJ/NRAO)/S.
Water was discovered in ancient galaxies, which surprised astronomers. What happened?
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Text/Picture Yangcheng Evening News all-media reporter Wen Cong has completed about 700 experimental projects, filling many gaps in my country's scientific research field... Next month, the China Spallation Neutron Source (CSNS) will have been in operation for four years. With th
Filling in many scientific research gaps! The China Spallation Neutron Source will be in operation for four years丨The party flag is flying high at the grassroots level
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In fact, we are not unfamiliar with the term mycotoxins. They generally exist in grains. The detection of mycotoxins can be carried out on-site. When choosing instruments for testing, we must choose brands with good quality.
Introduction to applicable industries of mycotoxin detectors
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How should we choose testing instruments? When choosing together, we should focus on the quality of the product. Speaking of instruments, online residual chlorine analyzers have a wide range of uses. They are not only very accurate in detecting residual chlorine content, but can
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His travels are extremely pleasant and full of endless surprises: "Stop at the Xianraf Bridge, watch the stone beams lying on the rainbow, the waterfalls spraying snow, I almost don't want to lie down." Stopping on the Xianraf Bridge, in the hazy night You can admire the natural
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Since Tiantongyuan has a large number of residents and most of them work in the urban area, this news has worried many Beijingers. There was even news on the Internet that "the entire Tiantongyuan is only accessible and cannot be entered".
"Asia's largest community" Tiantongyuan under the epidemic
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At 10:31 on May 2, 2021, on the 3139 kilometers and 400 meters of the 318 National Highway in Kangding County, Garze Tibetan Autonomous Prefecture, Sichuan Province, it was implemented to drive a medium-sized or above passenger car on roads other than expressways [with a speed li
Speeding by more than 50% at 3139 kilometers and 400 meters of National Highway 318 in Ganzi, Sichuan Province will result in a fine of 400 yuan and 12 points.
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On National Highway 107 in East and West Lakes, there is a constant flow of vehicles. At the intersection with Yousha Road, a military green simple tent is the temporary home of beekeeper Zhao Gaiming.
"I'll help you, but I won't take the money." This beekeeper beside the national highway has been helping drivers for three years.
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But many people drive motorcycles in pursuit of excitement. It appears in many people’s WeChat Moments. In the picture, a motorcycle is speeding down the road. The top speed has reached 180+km/h.
Racing to 180 yards and taking selfies? Traffic Police: Arrange immediately
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Recently, some citizens reported to Dahe Daily·Yu Video that as the weather gets warmer, more and more people are riding motorcycles on the streets. In this regard, some citizens are confused. Since Zhengzhou banned motorcycles in 2007, motorcycles are not allowed to travel on ro
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