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Chinese ancient timer time measuring or indicating apparatus in ancient Ch
Time Measurement in Ancient China
Time has always been an essential part of human life. From sunrise to sunset, societies have come up with various ways to measure the passing of time. In ancient China, time measurement was an important part of daily life as well as an essential part of Chinese ......
1036 
Sophia
Selection skills of drainage pump
Drainage Pump Selection Skills
Drainage pumps are widely used in agricultural production, urban infrastructure construction and other fields. Drainage pumps are mainly used for drainage, water supply and water circulation. When purchasing drainage pumps, the most important thing is to choose the ......
lifting block
Hoists and trolleys are widely used in overhead material handling to move loads between two points. They are usually used together in a single system in order to maximize efficiency. In this system, the hoist is used to lift and lower the loads, whereas the trolley is used to move the load horizon......
Grating Length Measurement Technology
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Raster Scanning Long Range Measurement Technique
Raster scanning long range measurement is a widely used technique for surveying applications that require surveying long distances. This technique involves a combination of conventional surveying with high-resolution and laser scanning technology ......
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......
Traps Selection Guide
Selecting Guide of Pressure Reducing Valves
Pressure reducing valves (PRVs) are installed in many industrial systems to ensure that the pressure of the outgoing fluid is maintained at a safe, desired and constant level. They are most commonly used on boilers, gas or oil lines, or any other pressu......
Abrasive material size basic particle size range comparison table
The purpose of abrasive grain size is to control the product parameters to obtain the desired surface effect. The size of the abrasive particles directly affects the cutting performance, workpiece surface quality and energy consumption. When selecting abrasivegrains, the workpiece material, hardnes......
Hanging wheel table in gear processing
Gearing is a fundamental component of many machines and mechanisms that transfer power and motion. Gearing is a mechanical element that combines several toothed wheels to increase, decrease, multiply, and redirect the speed of motion from one wheel to another wheel within the same axis. Gearing is......
Bearing code description of outer spherical ball bearing
Ball Bearings: What Do the Numbers Mean? Ball bearings are designed to provide smooth, low-friction movement in rotary applications. Used in drive systems, power tools, motors and more, ball bearings are identified by their numerical designation. This number typically provides important information......
Metric lathe turning metric thread exchange gear table in thread processing
Metric Thread Turning on a Lathe
The process of creating a metric thread on a lathe has been around for a long time, and it is a relatively straightforward procedure for properly trained machinists. The process consists of the lathe spinning and holding a work piece with a cutting tool, or tool b......
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