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Calculus 2: Ch 19 Surface (Area) of Revolution (5 of 11) Surface of Revolution Example (y)
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On February 13, 1947, Du Yuming gathered the mobile forces of five divisions and invaded Linjiang, the center of the South Manchu base area, for the third time. He also used his trump card, the newly formed 22nd Division.
Hong Xuezhi was supported by tanks and heavy artillery, but unexpectedly failed in the attack. Lin Biao: He didn’t understand enough about the double-sided tactics.
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In the early morning of August 31, 1939, several soldiers from Germany broke into Gleiwitz, a city in Germany. When we saw this passage for the first time, we didn't seem to think anything was wrong. It was just a mutiny in the army, a coup in the country, etc.
Did the Soviet Union "add insult to injury"? Britain and France "eat their word"? What happened when Germany blitzed Poland
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In order to formalize the "Four Orders" and improve the troops' standardized operation capabilities, the officers and soldiers of the detachment came to the Donglin River full of longing to find answers together through a unique on-site observation meeting. The key to standardize
How to implement standardized operation? Observe on site to find out the answer!
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It has been more than four months since the conflict between Russia and Ukraine broke out, and the two sides are still at a stalemate. According to information from the Ukrainian military, the Russian military has recently carried out large-scale missile attacks on multiple citie
After Ukraine was hit by a large-scale missile attack, Russian troops gathered on the front line and the US Embassy issued a security warning
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Of course, one waxes and wanes. As the number of Chinese Air Force J-20 stealth fighter equipment increases, the U.S. Air Force's anxiety is also increasing. Because the U.S. Air Force no longer has an advantage over China in terms of heavy fifth-generation aircraft.
US media: The US military has only 93 F-22s "combat-effective", and the number of heavy fifth-generation aircraft has been overtaken by China
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On the 143rd day of the Russian-Ukrainian conflict, there is still no sign of a ceasefire between Russia and Ukraine. The Russian army continues to bombard Donetsk, and also bombs the central Ukrainian city of Vinnitsa. There is a high probability that a gunpowder depot was disco
On the 143rd day of the Russia-Ukraine conflict, France was in a dilemma. Putin made two tough moves. This time it was very unusual.
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As China's comprehensive national strength continues to improve, it has become the "locomotive" of world economic development. In the context of a weak economy, many countries have also taken advantage of China's development.
The United States regarded verbal warnings as empty words, and the People's Liberation Army's actions in the South China Sea taught the U.S. military a profound lesson
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How startups are making their mark in the field of defense innovation Author: Richard Robert Editor: Caroline Liang At a glance: In recent years, due to the shorter innovation cycle in the civilian technology industry, more and more dual-use technologies have emerged. Start-ups i
How startups are making their mark in defense innovation
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On June 24, 2020, under the auspices of Russian President Vladimir Putin, 13 countries, including Russia, held a Victory Day military parade on Red Square to celebrate the 75th anniversary of Russia’s victory in the Patriotic War.
In 2015, a 128-year-old man called himself Hitler and declared: I am too tired after hiding for 70 years.
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The Russian army launched a missile attack on the central Ukrainian city of Vinnytsia, but this time, the Ukrainian army's Harpoon anti-ship missile was completely ineffective. In itself, the target of the shore-based version of the Harpoon anti-ship missile is to intercept Russi
Harpoon missile blocking is ineffective! The Russian military wants to turn the Baltic Sea and the Sea of Azov into Russian internal seas
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As we all know, in 1979, our country launched a self-defense counterattack against Vietnam and severely taught Vietnam a lesson that invaded us. Taking into account domestic and international conditions, Ye Jianying and Su Yu opposed an attack on Vietnam, believing that once the
In 1979, Ye Jianying and Su Yu opposed the invasion of Vietnam. After Deng Xiaoping asked Chen Yun, he made up his mind:
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U.S. media said that four important Asia-Pacific countries, the United States, Japan, India, and Australia, had previously formed the Quadruple Cooperation Organization (QUAD) to blatantly curb China’s influence in the Asia-Pacific region. Biden’s move is to integrate the strateg
The United States and India have formed a new "small circle" to contain China. US media: Will further contain China, but India has not responded
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Armed police soldiers insist on training special police officers to wear 70-pound explosion-proof suits under high temperatures of 37 degrees. How difficult is their daily work and life? Armed police soldiers train in a sea of cherry blossoms. What do you think of such a hardco
Armed police soldiers continue to train in high temperatures
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Although there are constraints from asymmetric factors such as various tactics and system confrontations, there is no doubt that the Russian tank technology has declined. This means that after June 1944 on the Eastern Front battlefield, the Soviet Army, especially in armored stre
Why is Soviet and Russian tank technology becoming more and more backward?
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According to Global News, the pro-green media on the island are hyping up that the People's Liberation Army military aircraft have frequently "disrupted Taiwan" recently. On the morning of July 15, the People's Liberation Army military aircraft once again entered Taiwan's "Air De
The United States and Taiwan increased military collusion and sent two wrong signals. The People's Liberation Army decisively issued a warning
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If we look carefully at this photo, we will find that Chairman Mao has his eyes closed tightly and looks sad. But looking at Chairman Mao’s previous appearances in public, it seems that he has never looked like this before. Even when he was in trouble, Chairman Mao He has always
In 1952, what happened to the female volunteer army representative who bravely embraced Chairman Mao in front of the camera?
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At the meeting, Party branch secretary Comrade Wang Xiaoyun focused on the theme, main results and report drafting process of the 14th Provincial Party Congress, the historic achievements in the past five years, and the overall requirements and goals of the province’s work in the
Youth•Ideology|The branch secretary lectures on the party to boost the entrepreneurial spirit of the officers
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The Standing Committee of the District People's Congress organized representatives to inspect the civil and administrative prosecution work. On the morning of July 15, the Standing Committee of the Pidu District People's Congress conducted an inspection of the civil and administr
The Standing Committee of the District People's Congress organized representatives to inspect the civil administrative prosecution work of Pidu Court
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According to a report by the New York Post on the 14th, former US President Trump posted on the social platform "Real Social" that his first wife Ivana Trump passed away in New York that day at the age of 73.
Trump’s first wife, Ivanka’s biological mother, dies at age 73
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Thai ghost movies have their own unique style. Most of them are composed of several horror stories. Of course, there are also whole movies that tell one plot. So this time, let us take a look at those wonderful Thai horror movies.
Not for the faint of heart: A look at the ten scariest movies in Thai film history
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Gemini Gemini people have good fortunes, good family luck, and continuous bursts of wealth. They are full of energy and noble temperament. They are very charming people and are easily favored by the opposite sex.
The four constellations bring blessings to the whole family, with auspicious stars shining and good luck and wealth.
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On July 14, Zhongjie Industrial Park held the second event of the theme night of "Great Security, Great Stability, Great Resolution, and Great Sales". Bai Guiqiao, leader of the park, presided over the event. The Housing and Urban-Rural Development Bureau, Agricultural Affairs Bu
Zhongjie Industrial Park held the second event of the theme night of "Great Security, Great Stability, Great Resolution, and Great Sales"