Meaning of materials?

Question 1: The meaning of materials Materials are the material basis for human survival and development. in the 1970s, people hailed information, materials and energy as the three pillars of contemporary civilization. in the 1980s, the new technological revolution represented by the high-tech cluster, and new materials, information technology and biotechnology are listed as important symbols of the new technological revolution. This is mainly because materials are closely related to the construction of the national economy, national defense and people's lives. In addition to their importance and universality, materials are also diverse. Because of the diversity of materials, there is no uniform standard for classification. Materials are those substances used by human beings to manufacture articles, devices, components, machines or other products. Materials are substances, but not all substances can be called materials. For example, fuels and chemical raw materials, industrial chemicals, food and drugs are generally not considered materials. However, this definition is not so strict, for example, explosives and solid rocket propellants are generally referred to as "energy-containing materials" because they are components of artillery or rockets. Because of the diversity, there is no standardized classification method. From the physical and chemical properties, can be divided into metal materials, inorganic non-metallic materials, organic polymer materials and composite materials composed of different types of materials. From the use of points, but also divided into electronic materials, aerospace materials, nuclear materials, construction materials, energy materials, biological materials and so on. Two more common categorizations are structural materials and functional materials.

Question 2: What is the meaning of raw materials Raw materials are raw materials and materials. Raw material generally refers to products from mining and agriculture, forestry, animal husbandry, fishery; material (processed material) generally refers to raw materials after some processing.

Raw material refers to all kinds of raw materials and primary materials, auxiliary materials, fuel, repair spare parts, packaging materials, purchased semi-finished products, etc., which are processed in the production process to change their form or nature and constitute the main entity of the product.

Raw materials are an important part of an enterprise's inventory, which has more varieties and specifications, and needs to be scientifically categorized in order to strengthen the management and accounting of raw materials.

Question 3: Definition of material 10 points Material Material English name: material

material

cáiliào

[material]: raw material; something that can be made into a finished product

material science

mechanics of materials

[data. material]: information; something to be referred to or used as material

reference material

archival material

[makings; stuff]: a person who is competent to do something

he is not acting material

Materials are those substances used by human beings to make objects, devices, components, machines, or other products. Materials are substances, but not all substances can be called materials. For example, fuels and chemical raw materials, industrial chemicals, food and medicine are generally not considered materials. However, this definition is not so strict, for example, explosives and solid rocket propellants are generally called "energy-containing materials" because they are components of artillery or rockets. Materials are the material basis for human survival and development, and in the 1970s, people hailed information, materials and energy as the three pillars of contemporary civilization, and in the 1980s, the new technological revolution represented by the high-tech group, and new materials, information technology and biotechnology are listed as the important symbols of the new technological revolution. This is mainly because materials are closely related to the construction of the national economy, national defense and people's lives. In addition to their importance and universality, materials are also diverse. Because of this diversity, there is no uniform standard for classification. From the physical and chemical properties, can be divided into metal materials, inorganic non-metallic materials, organic polymer materials and composite materials composed of different types of materials. From the use of points, but also divided into electronic materials, aerospace materials, nuclear materials, construction materials, energy materials, biological materials and so on. Two more common classifications are structural materials and functional materials; traditional materials and new materials. Structural materials are based on mechanical properties to manufacture materials used in stressed components, of course, structural materials have certain requirements for physical or chemical properties, such as gloss, thermal conductivity, irradiation resistance, corrosion resistance, oxidation resistance and so on. Functional materials are a class of materials formed by utilizing the unique physical and chemical properties or biological functions of substances. A material is often both a structural and functional material, such as iron, copper, aluminum, etc. Traditional materials are those that have matured and have been mass-produced and applied in large quantities in industry, such as iron and steel, cement, and plastics. These materials are also known as basic materials because of their large volume, high output value, wide range, and the basis of many pillar industries. New materials (advanced materials) are those materials that are being developed and have excellent performance and application prospects. There is no obvious boundary between new materials and traditional materials. Traditional materials become new materials by adopting new technology, improving technology content, improving performance and increasing value-added significantly; new materials also become traditional materials after long-term production and application. Traditional materials are the basis for the development of new materials and high technology, and new materials can often promote the further development of traditional materials.

Plastic formulation design process in the selection of materials to pay attention to the problem --------------------------------------------------------------------------------------------------

Plastic formulation design process of selecting materials to pay attention to the problem - according to a statistical data show: in the statistical survey of injection products failure, 23% is the choice of material error, 9% is the choice of additives on the error. This shows the importance of material selection. Generally, it is required to reduce the cost of the material, improve the performance of the material, and at the same time to consider the appearance of the era of beauty and durability, so it is difficult to choose a suitable material that can meet all the performance requirements. For example, when producing transparent containers by injection molding, two materials, polystyrene or polymethylmethacrylate, can be selected under normal circumstances. However, if cheapness is the primary requirement, polystyrene should be selected; conversely, if weathering performance is emphasized, methyl methacrylate (i.e., Plexiglas) should be selected. If you also want to add good impact resistance, it is necessary to exclude the above two materials and choose polycarbonate, of course, the cost should be increased.

In general, the following should be considered in the selection: the material to be selected in the use of the environment in the highest and lowest temperature range can withstand changes in the temperature range, the temperature range of the material can be deformed, prone to cracking or not, how the impact resistance. If it does not meet the user requirements, we must change the existing plastic varieties, another choice of a new species, or modified processing.

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Question 4: What does material ratio mean? The material ratio, also known as the load-bearing area, or Abbott flint curve, is a roughness term. This parameter is generally used in automotive cylinder block production lines and refers to the upper part of the plane being as smooth as possible to minimize friction, and the lower part of the plane having valleys for lubrication.

Question 5: What does material mean? Materials are those substances used by humans to make objects, devices, components, machines or other products. Materials are substances, but not all substances can be called materials.

Question 6: What does material mean? ... Material is an alias for a substance that has been given a use by man. Let's say a stone is burnt to become cement, a tree is cut to become wood. You can list countless cases. The definition given in the first sentence is the most important.

Question 7: What does linguistic material mean in simple terms? It's a *** term that covers a wide range of topics. Language material refers to a variety of information that can be transmitted to share, communication and exchange. From the classification point of view can be divided into:

1. from the acoustic point of view is divided into two categories of audible and silent language materials. 2. from the carrier point of view is divided into the human body language materials and written language materials

3. from the visual point of view is divided into the landscape language materials, painting and calligraphy language materials, physical language materials, etc.

4. from the visual point of view, the language materials are divided into the human body language materials, written language materials, written language materials and written language materials, and so on.

Question 8: what is the meaning of corroborative material corroborative material can not directly provide proof of the disputed facts, but can be proved through the collection of other evidence of the reliability of the source of the evidence to supplement the relevant material.

In law, corroboration refers to, can not directly to the disputed facts to provide proof, but can be proved by proving the reliability of other sources of evidence collection and strengthen the evidence. For example, A is a robbery attack *** party's main witness, his eyewitness testimony about the robbery is direct evidence. However, any evidence offered by the *** party to establish A's credibility, such as testimony from other witnesses confirming A's good character and credibility, is corroborating evidence.

The meaning of corroboration is as follows:

Ancillary evidence that does not provide direct proof of the events in dispute.

The term is used to mean proof by material.

Question 9: What is the meaning of material issued in accounting? Materials are taken out of the warehouse

They may be used in production, which we call receiving materials

They may be used in sales, which we call selling materials

But they are "issued".

Question 10: What is the meaning of phase in material? It would be good to have more details. The upstairs seems to be a bit confusing, he confused the solid and liquid inside the spoken language, gas and what into the phase. In fact, phase is a very specialized name in the materials world. First of all, when it comes to phase, it's a crystallographic concept, so the term "gas phase" is completely irrelevant. The gas phase is not a crystalline state!

A phase is usually described as a component of a single or multiple crystals with the same crystal structure. It is a concept that is easily confused with organization.

The amorphous state can be described as the state, which does not have a long-range ordered structure. The amorphous state is not a phase, even though it is a solid state.

The phase is a more specialized concept, but it is definitely not a gaseous solid state

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