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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
Cold Knowledge of the Qing Dynasty - Metallurgical and Machinery Manufacturing Achievements of the Qing Dynasty
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[Source: Shunyi Ecological Environment] Ubiquitous plastic products have facilitated people's lives, but the resulting plastic waste has caused a lot of pollution to the ecological environment...
"Popular Science" "Degradable Plastics" Revealed
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Paris, July 7, local time, France had 161,265 new confirmed patients and 89 new deaths within 24 hours, bringing the total to 149,943.
An increase of 161,000 cases! New variant of COVID-19 detected in Europe! Fuel subsidy launched in October! France plans to limit property tax increases! Pasta and meat prices are going crazy
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Since the terms information and entropy are used in many branches of science, this may sound strange to those familiar with the second law of thermodynamics. How could information and entropy be identical?
Conservation of information and the second law of thermodynamics, how can these basic laws be consistent?
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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
Why do American experts want to blow up the moon and leave the earth without seasons? What is their purpose?
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Every spring and summer is the time when most young birds learn survival skills such as leaving the nest to fly and foraging for food. Due to rain, strong winds, physical strength and other reasons, many young birds will accidentally fall from the trees when learning to fly. . Wh
Don't pick up the birds on the roadside! Please let them go home on their own
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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
Is the green sky suddenly appearing in the United States an ominous sign?
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There is a terrifying legend circulating deep in the dense forests of Xishuangbanna, Yunnan. There is a man-eating blanket-like monster in the Lancang River that sucks human blood. It is extremely terrifying. Once encountered, there is no possibility of survival. Is this true?
The "blood-sucking blanket" in the Xishuangbanna River drags animals into the water and eats them. What kind of animal is it?
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The Earth is a planet filled with liquid water, with approximately 71% of its surface area covered by seawater, and this number is getting larger as sea levels rise due to global warming. Many people may have wondered what the bottom of the sea looks like. The simple answer is th
Why is it said that it rained for millions of years before the earth finally had an ocean?
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Protecting wild animals is everyone’s responsibility. The reporter learned from the Guangdong Coast Guard Bureau on July 7 that recently, law enforcement officers from the Nan'ao Work Station of the Guangdong Shantou Coast Guard Rescued a pangolin, a national first-level wild pro
Meet a "cute" on the road! Coast Guard law enforcement officers warmly rescue pangolins, national first-level protected animals
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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
Instructions for using online residual chlorine analyzer
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On the afternoon of April 14th, Beijing time, the finals of the 2019 Singapore Badminton Open began. Dechabol/Sapsiree broke the championship drought of nearly 2 years and won the mixed doubles championship. Keigo Sonoda/Takeshi Kamura narrowly defeated Ahsan/Hendra 2-1. Kento Mo
Momota Kento reversed Ginting 2-1! Japan’s 3 gold medals and 1 silver finish | Singapore race
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On April 13, Beijing time, the semi-finals of the 2019 Singapore Games will begin. Kento Momota VS Axelsen, Ginting VS Zhou Tiancheng, Tai Tzu Ying VS Akane Yamaguchi, Sindhu vs. Nozomi Okuhara, the battle is about to begin.
Momota VS Axelsen, Ginting PK Zhou Tiancheng | Live broadcast of the Singapore semi-finals at 13 o'clock
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Xinhua News Agency photo, Singapore. Xinhua News Agency photo on April 10, 2019, Singapore.
Badminton - Singapore Open: Kento Momota advances
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The 2019 ITTF T2 Diamond League Singapore Station kicked off today. The Chinese team has 3 male players and 8 female players participating. Except for Ma Long, Fan Zhendong, Wang Chuqin, and Liu Shiwen, all other main players are present.
CCTV broadcasts the entire event live! T2 Diamond Tournament Singapore starts today (with live broadcast time)
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On April 9, Beijing time, the 2019 Singapore Badminton Open is about to start. Stars such as Lin Dan, Chen Long, and Momota Kento will all participate in the competition.
The Singapore schedule is released, the final will be held at 13:00 this Sunday
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On March 19th, Beijing time, the WTT Singapore Grand Slam will continue. There will be three focus dialogues today. Five national table tennis players will appear again. They are competing in the men’s singles semi-finals and women’s doubles finals. Two of them are in the middle.
Today’s Singapore Grand Slam schedule: Three men’s men’s singles in national table tennis compete in the finals, Sha Yu wins the women’s doubles championship
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