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coke microstrength
Micro-intensity of Carbon Black and Its Application
Carbon black is a form of amorphous carbon, and is mainly composed of carbon particles. It has a wide range of applications; from rubber reinforcement, white paint pigment and furnace bricks, to being used as dyes and catalysts in industry. Ther......
1054 
Emily
Tungsten ore beneficiation
Tungsten ore also known as wolfram ore is an important ore that contains tungsten. Tungsten is widely used in industry, especially in the fields of hard-wearing materials, high-temperature alloys, and special steels, as well as a special transformer material. Lithium and cobalt-based alloys, etc. ......
sampling theorem
Sampling Theorem
The sampling theorem, which goes by various names, is a fundamental result of information theory that states that perfect reconstruction is possible when certain conditions are met. It is the result of the process of analog-to-digital conversion, which is used to create digital si......
Yang Songhe
Life is a beautiful thing and it should be cherished no matter what life throws at us. Life can be hard, it can be joyous, it can be heartwarming, it can be sorrowful, it can be filled with laughter, it can have moments of sadness – but its all a part of life. Its important to remember that regar......
Fenghua Hengzheng Stainless Steel Co., Ltd.
Fenghua Hengzheng Aerospace Non-corrosive Steel Co. Ltd. is a leading manufacturer of aerospace grade heat-resistant, non-corrosive steel products for use in a variety of industries.
Founded in 1998, the company is located in Fenghua City, Zhejiang Province, and has quickly become an integral par......
Wenzhou Lucheng Metal Material Company
Metal Materials Company of Lucheng District Wenzhou
Metal Materials Company of Lucheng District Wenzhou is one of the leading metal materials companies in China. It produces and supplies a wide range of metal materials for commercial, industrial and residential construction, including steel, alum......
re-export
The Economy and Future of Global Trade
International trade has been the backbone of the global economy for centuries. It has provided countries with the means to increase their wealth and prosperity, as well as improve the quality of goods and services available to their citizens. From the begi......
cluster sampling
Introduction
Stratified random sampling is a sampling technique used when one wants to ensure that a representative sample from the population is obtained. It involves dividing the population into different strata or categories and then randomly selecting a sample from each stratum. This form of ......
PPS sampling survey method
Introduction
The article is about PPS sampling. This approach to sampling is also known as probability proportional to size (PPS) sampling. The article will provide an overview of the PPS sampling technique, its advantages and disadvantages, and some applications and findings.
Definition
PPS sa......
central limit theorem
The Central Limit Theorem
The central limit theorem is an important and widely used theorem in statistics and probability. It states that if a random number of samples of size n drawn from any population with an arbitrary distribution are averaged, the distribution of the average will tend to beco......
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