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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
Steel Price Index
Steel Price Index
There is no better way to assess the economic and market trend of a certain commodity than by looking at its price index. The steel price index is one such tool that provides an excellent insight into the global steel market. This index tracks the prices of several types of stee......
Metal Charpy (U-notch) impact test method GB229-84
Metal Charpy (U-notched) Impact Test Method
The Charpy impact test, also known as the Charpy V-notch test, is a type of fracture testing methodology. It is used to determine impact fracture strength of particular metals. The Charpy U-notch test method, as specified in GB229–84, is intended to pr......
Carbon steel flux cored wire GB 10045-881
Carbon steel electrodes for arc welding
Carbon steel electrodes for arc welding are an important part of the welding industry. These electrodes are commonly used for a variety of structural fabrication, pressure vessel fabrication, and pipe fabrication welding processes.
These electrodes play a ......
fluid bed dryer
Fluidized Bed Dryer
Fluidized bed dryers (FBDs) provide a unique method of drying that offers distinctive advantages over typical convection based drying systems. This technology is often used to dry material that is too delicate to move through traditional drying systems, such as particles of fi......
rock burst
Impact Loading
Impact loading is the force applied to a structure that results from a single, rapidly applied force. This loading is usually of short duration and is usually caused by an event such as a tornado, earthquake, or vehicle crash. Impact loading can often exceed the capability of a str......
Ordinary sinking method
，锚文本
Cable-Tool Drilling: Channeling the Earth with a Bit and a Spade
Cable-tool drilling, also known as percussion or spudding drilling, is an age-old method of using a large bit with a weighted chisel attached to it and pounding it into the ground. This method has been used since ancient tim......
Brief description of the process of the raw material yard
Raw Material Yard Process Description
A raw material yard is an industrial storage area that is primarily used for the storage and distribution of raw materials such as coal, iron ore, scrap metal, chemicals, and other commodities. It is usually located on the grounds of the client’s facility an......
Lead Processing Plant Design
Design of a Lead Processing Plant
This document outlines the design of a lead processing plant, which will be established to produce lead from scrap. The plant will be located in a rural setting, providing assistance to local communities in their efforts to reduce the adverse environmental impact......
Leaching Toxicity Monitoring
Leaching toxicity monitoring
The release of hazardous materials into the environment can lead to numerous health, safety, and environmental risks. Therefore, it is important to monitor the leaching of hazardous materials to ensure their safe disposal or storage. Leaching toxicity is the measure ......
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