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Instrument Standard Number_Laboratory Instruments
Standard for Metrology Instruments and Equipment
Metrology is the scientific study of measurements, and is essential for modern living. It plays a major role in practically every field of science and engineering, from measuring length or temperature of objects or materials, to accurately plotting......
1027 
Sophia
GB/T 17895-1999 Natural gas vehicles and liquefied petroleum gas vehicles vocabulary
GB/T 17895-1999 Natural Gas and Liquid Petroleum Gas-Fueled Vehicles - Vocabulary
Natural gas and liquid petroleum gas-fueled vehicles are becoming increasingly popular. This has, in turn, created a whole new vocabulary specific to the industry. This article provides a comprehensive glossary of t......
GB4884.2-1995 pure helium
Hydrogen is a chemical element with the symbol H and atomic number 1. With an atomic weight of 1.008, it is the lightest element on the periodic table. Hydrogen is the most abundant chemical substance in the universe, making up 75% of normal matter by mass and almost all of the helium in the unive......
Material Physics Test
Experimental Physics
Experimental physics is the use of physical, scientific principles and methods to identify, quantify, understand and describe the natural world - from the fundamental level, such as subatomic particles, to the macroscopic, such as buildings and other features of the built env......
enthalpy
Enthalpy is a measure of energy associated with a chemical reaction, expressed in units of heat associated with a process. Enthalpy is simply a form of energy that scientists can use to measure the amount of energy released or taken in during a reaction.
Enthalpy is important to chemistry and bio......
dry friction
Friction
Friction is the force that operates when two objects rub against each other. We experience friction almost everyday in one form or another. For example, when you try to move a heavy piece of furniture across your floor, friction between the floor and the bottom of the furniture makes it d......
Effect of Hydrogen Evolution on Coating
Hydrogens Effects on Coating
Introduction
Hydrogen is a major component of the universe, and can have significant effects on its environment. In particular, the effects of hydrogen on coatings and other materials used in the production and protection of metal products can be dramatic. While hydr......
Grading by Carbide Number
Carbon Classification
Carbon is essential for life on Earth and can be found in many forms. Carbon is the fourth most abundant element in the universe and makes up eighteen percent of the Earths crust. It is part of all known forms of life and it is the basis of all known organic compounds. Carbo......
Characteristics and Causes of Internal Burning
Features and Cause of Internal Overheat
Heat is the most basic form of energy in the universe and the building block of all other forms of energy.It is naturally produced in the operation of many types of machinery and technology,as well as in chemical reactions.However,if the temperature of a pa......
Troostites
The Five Elements Theory
The Five Element Theory is a theory from ancient Chinese philosophy. It is believed to be the origin of all theories of Chinese medicine for thousands of years. According to the five elements theory, all things in the universe are composed of five elements: metal, wood, w......
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