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GB/T 3222-94 Acoustic Environmental Noise Measurement Method
，内容是GB/T 3222-94声学 环境噪声测量方法
In 1994, GB/T 3222 was released by the China National Standards on Acoustics to provide a standard method to measure sound levels in the environment. The standard was developed to meet the needs of new acoustic construction regulations in China and to reduc......
1068 
Lily
MH Industrial Briquette Technology
Industrial coal technology
Industrial coal technology refers to the various specialized techniques used to process coal into a desirable form. The different forms of coal technology include the cutting and splitting of coal, the cleaning and preparation of a fuel or feedstock, the conversion of c......
Flowchart of PLC Fault Finding Method and Its Countermeasures
Flowchart for PLC Fault Finding and Strategies for Troubleshooting
PLC (Programmable Logic Controller) is an important device for automation systems and an essential part of the control system in industry. However, PLC fault finding can be a vexing problem due to the complexity of their programs,......
Controlled Rolling and Controlled Cooling Technology of SCM435 Alloy Wire Rod
Rolling and cooling process of SCM435 alloy bar
SCM435 alloy rods are commonly used in the automotive industry due to their good welding, machining and heat treatment properties. The rolling and cooling process of SCM435 alloy rod must meet the strict requirements of rolling and cooling condition......
Cause Analysis of Diesel Engine Difficulty in Starting
Diesel Engine Starting Difficulties
Diesel engine starting difficulty is a common problem faced by vehicles powered by diesel engines. This type of problem is potentially dangerous and can lead to serious mechanical damage or accidents. Therefore, it’s important to address this problem as quickl......
Selection of shape and size of cutting edge
The choice of Shovel Blades shapes and sizes
Shovels have been used for hundreds of years and remain one of the most versatile tools in any arsenal. They come in a variety of shapes, sizes, and materials, making it easy to find the perfect shovel for any job. But how do you choose a shovel blade?......
superplastic forming
Injection molding is a process used to produce plastic parts by injecting molten material into a mold. The injection molding process is suitable for producing intricate and complex parts with close dimensional tolerances and enhanced surface finishes. The molding process begins with pellets of pla......
turning tool
Hello and Welcome!
This article is about the incredible tool known as the carpenter’s chisel. It is an essential tool that is used in many woodworking projects. I will discuss the different types of carpenter’s chisels and the various uses that they can be put to.
A chisel is a tool with a sh......
Turning
Turning
Turning is a machining process in which a cutting tool, typically a non-rotary tool bit, describes a helical toolpath by moving more or less linearly while the workpiece rotates. The tools axes of movement may be literally a linear axis, but they can also be combined into more complex mot......
Form rolling
Cold rolling is a steel forming process in which a metal bar is passed through a pair of rolls to reduce the thickness, increase the yield strength and increase the hardness of the metal bar. This type of metal forming process involves passing the metal bar between two rolls that rotate in opposit......
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