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tower test
Tower of London Test
The Tower of London Test is a cognitive test designed to assess visual, spatial and working memory skills. It is a type of executive function test, which measures an individual’s ability to plan, sequence and execute a task. The test is often used to assess people with neuro......
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iron man of song dynasty
The Song Dynasty Iron Man
During the Song Dynasty in China, a man named Zhao Kuangyin began making what became known as the Iron Man. Zhao was born into a military family in 927, and it was here that he learned the art of war. As a young man, he joined the Liangzhou army, and it was during this s......
agricultural machinery
Agricultural Machinery
Agricultural machinery is a term used for machinery that is used on farms to assist with farming activities. Agricultural machinery has been an integral part of farming for many centuries, and has revolutionized the way farming is done today. Today, agricultural machinery i......
The Determination of the Movement Direction of CNC Machine Tool
Overview
Computer numerical control (CNC) machining is a process in manufacturing that uses pre-programmed computer software to guide the motion of machines and tools. In this way, increasing accuracy and reducing production time that can be achieved in the manufacturing process. CNC machining is......
Axial cutter combination
The axial tool combination, also known as ox knife carving sparrow, is an advanced manufacturing technology inspiring from the traditional carpentry work of Chinese craftsmen. This combination of tools facilitates efficient and precise cutting of intricate parts with small fillets and very tight t......
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......
Injection molding machine solenoid valve installation precautions
Installation Precautions for Solenoid Valves of Injection Molding Machines
Injection molding machines are very common equipment in production factories. The installation of solenoid valves has a great influence on the performance of the injection molding machine. Here are some tips to help you in......
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......
Small common sense of agricultural machinery
The Basics of Agricultural Machinery
Agricultural machinery is a vital component of modern farming systems. As technology has advanced over the years, so have the types and capabilities of machines and equipment used in agricultural production. From tractors to combine harvesters, from harvesting......
Damage Causes and Maintenance of Tractor Front Driven Disk
Introduction
Drag harrow is an agricultural tool, also called plow, which is mainly used for cultivating, weeding, loosening soil and fertilizing. Its active element includes harrow disc. The disc harrow is an essential part of a drag harrow, with which it can efficiently and quickly cultivate so......
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