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bronze smelting technique in ancient China
Bronze Smelting Technique in Ancient China
Bronze smelting was one of the great achievements of ancient China. Between the 16th and 11th centuries BC, the art of bronze smelting was perfected. In this process, the ore was heated to a high temperature, resulting in an alloy of copper and tin tha......
1026 
Erin
South China Shipbuilding Holdings (HK) Ltd.
Introduction
South China Shipbuilding Holdings (HK) Ltd. (“SCSH”) is a public company that is listed on the Hong Kong Stock Exchange. It engages in the production, sale, and maintenance of various vessels, including merchant ships, naval ships, and luxury yachts. The company is a leader in the ......
usa today
Todays America
The United States of America today is a fast-developing country full of possibilities. It’s a melting pot of cultures from all around the world and a leader in technological and scientific advancements. It’s home to some of the world’s most successful companies, from Google to A......
Commonly used English for machinery: transportation
How the Airplane Changed the World
The invention of the airplane has had a profound influence on the lives of people throughout the world. It has made travel faster, safer, and easier than ever before. Moreover, it has enabled people to explore new places, witness different cultures and partake i......
crushing ratio
The Fragility Index
The fragility index is a measure of how vulnerable a country or political system is to social and economic disturbances. A high fragility index indicates a high level of political instability, economic hardship and social unrest. A country with a high fragility index is typica......
blasting blast
Explosion Impulse
Explosion impulse is a powerful form of energy that can be harnessed and used as a destruction force. It exists in various forms and can be used as a weapon of mass destruction, capable of demolishing buildings, destroying large fields or biomes, or, in extreme cases, wiping out......
ancient chinese sail
Chinese Ancient Sailing Ships
China has a long and illustrious record of craftsmanship, reaching back over 6,000 years. One of the most remarkable and long-lasting creations of these ancient artisans were the sailing ships used to voyage across the open seas.
Chinese small ships have been around......
History of Machinery in Ancient China (Part Two)
Chinese Mechanical History (Part 2)
The Tang Dynasty (618-907) marked another golden age for Chinese mechanical achievements. During this time, the Chinese developed the world’s first geared mechanism—the Tang world-shifting-arm, which used two interlocking gears to control the speed of a large......
GB 4396-1984 Carbon dioxide fire extinguishing agent
论述CO2灭火剂的用途，文献参考要求
CO2 Fire Extinguishing Agent
CO2 Fire Extinguishing Agent is a type of modern fire extinguishing agents, which plays an important role in fighting against fire. It is clean and efficient and has the properties of non-toxicity, no residual combustion and no harm to......
ancient history of machinery
Ancient History of Machinery
The very first machines were created as replacements for human skills. For example, back in ancient Egypt, 4000 BC, farmers and merchants used shadufs, a manual machine created to lift water from a river and put it into a crop field. This allowed them to control the a......
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