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History of Machinery in Ancient China (Part 2)
The History of Ancient Chinese Machinery (Middle Ages)
The Middle Ages in Chinese history (589–960 AD) are known as the period of the Five Dynasties and Ten Kingdoms. During this era, the Chinese began to develop techniques for machine building and mechanical engineering that would later contrib......
1045 
Sophie
The definition and development history of crossbow
Definition and Development of Crossbow
Crossbow is a weapon for firing arrows or bolts at targets by means of lever, rope, and pulley systems. It was the earliest form of projectile weapons and has been used for thousands of years in both war and hunting.
The word crossbow itself stems from the G......
Cleaning equipment category: shot blasting cleaning room
Abrasive blasting room is an essential cleaning equipment in modern production and life. It is widely used in automobile, motorcycle, shipbuilding, metal parts, mechanism parts, weldment, steel structure, molded parts, sand mould, non-ferrous metal, alloy and non-metallic parts, glass crafts, elec......
How to Repair a Tank
How to Repair a Water Tank
Water tanks are a necessary part of any home, providing clean drinking water and allowing for sanitation during times of shortage. Most tanks last for years, but like any other appliance, they can wear out or break. When that happens, the tank needs to be repaired. Here......
ceramics
The origins of Chinese ceramics dates back to 6000BC, and China is one of the oldest continuous ceramic cultures in the world. China is home to some of the world’s most fascinating and ancient pottery, an important part of the rich cultural heritage of the country.
For more than two thousand yea......
GB 6567.2-86 Graphical symbols for piping systems
Today, graphical symbols for piping systems are seen everywhere, from public and private buildings to highways and industrial complexes. Piping systems are a key part of the modern world, and without an effective system in place, no construction project can be completed.
Graphical symbols for pip......
GB 6567.5-86 Graphical symbols of piping systems Axonometric drawing method of graphical symbols such as piping, pipe fittings and valves
GB 6567.5-86 Drawing Method for Axonometric Diagrams of Pipe Systems, Fittings and Valves, etc.
This national standard GB 6567.5-86 was approved on November 14, 1986, issued on May 1, 1987 and imposed on January 1, 1988 by the State Administration for Quality Supervision and Inspection of Machine......
GB3235-82 Fan basic type, size, parameters and performance curve
2500字的英文文章
Abstract
This paper introduces the basic type, size, parameters and performance curves of GB3235-82 fan. First, the basic type and structure of the fan are introduced. Secondly, the size and parameter range of the fan are given, and the selection of impeller type is mentioned. F......
Gear measuring instrument: top-mounted tooth profile measuring instrument
Introduction
Upper Set Gear Dial Indicator is a versatile instrument which is used to measure the profile and size of gears and other cylindrical components. This instrument is mainly used in the automotive and metrology industries. It is a precision measuring instrument which has three styli’s ......
Gear high frequency quenching machine technical parameters
Gear High Frequency Quenching Machine Technology Parameters
As a common gear treatment process in the industry, high frequency quenching technology has now obtained a very high application rate. The common gear high frequency quenching machine has the advantages of high working efficiency, high q......
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