0:28
Recommended
During the decoration design process, we will all choose how to do sound insulation. No matter what, sound insulation has become an issue that must be considered when selecting materials for modern decoration. Stay away from noisy places such as schools and factories. Indeed, noi
Awkward! Is your house poorly soundproofed? Netizen: Fortunately, the child goes to bed early every night!
05/23
1881
Today, we will briefly review the many wars launched by the United States after World War II and see what war crimes this "world's largest source of chaos" has committed. Overview - On June 25, 1950, the Korean Civil War broke out.
“The World’s Biggest Source of Chaos”—A Brief History of America’s Foreign Wars
05/23
1221
Getting married is a big event in life, and preparing various wedding supplies is even more important. In addition to preparing various supplies for the wedding day, couples also need to spend part of their budget on jewelry. So, how much money should newlyweds prepare for their
What is the appropriate budget for a diamond ring? How to choose the diamond ring you like?
05/23
1860
When she was 1 year and 1 month old, Xiao Xi, who had just learned to walk, was discovered by her mother that something was wrong. She could lift her left foot, but her right foot was always dragging. Xiaoxi's mother immediately took her to the hospital for examination. The docto
One in 250,000! Mother resolutely takes bones to save daughter: As long as she can stand up, I am willing to do anything
05/23
1258
"Make way for the college entrance examination and reduce noise." How much sound intensity can be considered noise? Affected by the epidemic, this year's college entrance examination was postponed by one month compared to previous years. In fact, over the years, the people have a
"Make way for the college entrance examination and reduce noise." What is the sound intensity that can be considered noise? May as well understand
05/23
1446
The application data for 2022 has not been released yet, but judging from the application data for master's degree students released by some universities, the number of applicants for many universities is increasing compared with last year.
More than a quarter of undergraduate graduates choose to study interprofessionally
05/23
1517
According to news on October 11, market research organization Witsview released the latest LCD panel quotation. The average price of mainstream 55-inch TV panels is US$170, a decrease of US$15 or 8.1% compared with late September;
Is it the best time to buy a TV? LCD panel prices plunged 40%, instantly returning to a year ago
05/23
1295
You can do a simple calculation for these two groups of people, and you will find that the average monthly salary is 17,000. But it is obvious that the difference in salary between group 2 people is much greater than that of group 1 people.
08 l Standard deviation: Is this person "reliable"? Actually look at the standard deviation?
05/23
1187
In the blink of an eye, it's August again, the temperature in the free shipping area is frighteningly high, and the air is full of "noisy" smell. Due to the epidemic and the shutdown during the rainy season, it seems that the whole world is undergoing renovations from July to now
How much impact does noise have on people's health? How many decibels is considered quiet?
05/23
1362
55 decibels is the sound of people talking normally, the sound of an alarm clock is about 80 decibels, and a chainsaw can even make 100 decibels of noise when it is working. When a jetliner is 100 meters above the ground, people can hear 130 decibels. The loud decibel sound, in f
Why is the loudest sound heard by humans 194 decibels? How terrible is it after exceeding 200 decibels?
05/23
1777
Relation Video
hotcomm Relation Video
Site video recommendation
hotcomm Latest News
Cailian News Agency (Shanghai, Editor Bian Chun) News: The emergence of a new strain of Omicron has caused turbulence in global markets in recent days. JPMorgan Chase & Co. pointed out that this may be good for risk markets, Investors should take this opportunity to plan for reop
JPMorgan: Omicron may accelerate the end of the new crown pandemic. Investors should take advantage of the market's sharp decline to buy bottoms
05/23
1720
Source: Liandu released that as of 17:00 on the 16th, Beijing time, the cumulative number of confirmed cases outside China exceeded 80,000; Italy had more than 3,200 new confirmed cases in a single day, and the cumulative number of confirmed cases was nearly 28,000; the cumulativ
U.S. stocks plummeted, and many European countries upgraded prevention and control measures... 86,434 cases of new coronavirus pneumonia were diagnosed outside China
05/23
1312
Faced with the panic caused by the new virus, the Western media brought out bowls of "poisonous chicken soup" to hypnotize themselves, and did not forget to discredit China's "dynamic clearing" policy in response to the epidemic.
Western media is offering "poisonous chicken soup" again: the number of infections has reached its peak and the virus will disappear quickly
05/23
1120
The third season of the variety show "Sisters Riding the Wind and Waves" has been broadcast for more than half. The third stage performance has ended. This time there are three sisters eliminated, namely Liu Lian, Aya, and Huang Yi.
The incomprehensible phenomenon of "Lang Jie 3": "Beauty" lost, is it all the fault of "Stars Lighting"?
05/23
1381
People who remember Zheng Zhihua are probably middle-aged. Most people who like his songs are moved by his sincere feelings and lyrics with great practical significance. The song "Stars Light Up" is one of Mr. Zheng Zhihua's masterpieces. It was released in 1992, which makes it e
The program "Hot Life" adapted Zheng Zhihua's "Star Lights", and the dark parts became full of sunshine
05/23
1345
Tenor singer Shoma. "Ordinary things can also be as majestic as mountains. If you do it well, it will not be simple. If you are kind and warm, you can become a hero." Recently, the original song "Stars Light Up" has been widely circulated among Ningbo people. The reporter learned
"Every ordinary person can become a light" "Stars Light" sings about the mortal hero Qian Haijun
05/23
1222
Site Latest News
Cailian News Agency (Shanghai, Editor Bian Chun) News: The emergence of a new strain of Omicron has caused turbulence in global markets in recent days. JPMorgan Chase & Co. pointed out that this may be good for risk markets, Investors should take this opportunity to plan for reop
JPMorgan: Omicron may accelerate the end of the new crown pandemic. Investors should take advantage of the market's sharp decline to buy bottoms
05/23
1720
Source: Liandu released that as of 17:00 on the 16th, Beijing time, the cumulative number of confirmed cases outside China exceeded 80,000; Italy had more than 3,200 new confirmed cases in a single day, and the cumulative number of confirmed cases was nearly 28,000; the cumulativ
U.S. stocks plummeted, and many European countries upgraded prevention and control measures... 86,434 cases of new coronavirus pneumonia were diagnosed outside China
05/23
1312
Faced with the panic caused by the new virus, the Western media brought out bowls of "poisonous chicken soup" to hypnotize themselves, and did not forget to discredit China's "dynamic clearing" policy in response to the epidemic.
Western media is offering "poisonous chicken soup" again: the number of infections has reached its peak and the virus will disappear quickly
05/23
1120
The third season of the variety show "Sisters Riding the Wind and Waves" has been broadcast for more than half. The third stage performance has ended. This time there are three sisters eliminated, namely Liu Lian, Aya, and Huang Yi.
The incomprehensible phenomenon of "Lang Jie 3": "Beauty" lost, is it all the fault of "Stars Lighting"?
05/23
1381
People who remember Zheng Zhihua are probably middle-aged. Most people who like his songs are moved by his sincere feelings and lyrics with great practical significance. The song "Stars Light Up" is one of Mr. Zheng Zhihua's masterpieces. It was released in 1992, which makes it e
The program "Hot Life" adapted Zheng Zhihua's "Star Lights", and the dark parts became full of sunshine
05/23
1345
Tenor singer Shoma. "Ordinary things can also be as majestic as mountains. If you do it well, it will not be simple. If you are kind and warm, you can become a hero." Recently, the original song "Stars Light Up" has been widely circulated among Ningbo people. The reporter learned
"Every ordinary person can become a light" "Stars Light" sings about the mortal hero Qian Haijun
05/23
1222