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Probe orientation needle 265*2980, needle head diameter is 6.0, end probe needle
Porosity refers to the percentage of voids within the apparent volume of a granular material. It is an essential property that can be classified into true porosity, closed porosity, and initial void ratio, often represented as P. The formula for calculating porosity is widely used in material science and engineering:
Where:
P represents the porosity of the material, expressed as a percentage (%).
V₀ is the volume of the material in its natural or apparent state, measured in cubic centimeters (cm³) or cubic meters (m³).
V is the absolute compact volume of the material, also measured in cm³ or m³.
Beyond internal porosity, the characteristics of the pores themselves significantly influence the material's performance. These characteristics include whether the pores are sealed inside the material or connected to the external environment. If the pores are fully enclosed, they are referred to as "closed pores." If they are open and connected to the surface, they are called "open pores." Some materials may have a mix of both types, with some pores being isolated and others interconnected internally.
In addition, the distribution and size of the pores play a crucial role in determining the behavior of the material. Uniformly distributed pores can lead to more predictable mechanical properties, while larger or irregularly shaped pores might affect strength, permeability, and thermal resistance. Understanding these pore characteristics is vital in selecting the right material for specific applications, such as construction, filtration, or insulation.
Smart Whiteboard
As an innovative tool for modern education and office work, smart whiteboard have a series of remarkable features.
Firstly, interactive whiteboard have high-definition display effects, clear images, bright colors, and can vividly present various information, whether it is text, charts, or multimedia content. Its touch sensing technology is very sensitive and can quickly and accurately respond to user operations. Writing and drawing are smooth and natural, just like writing on paper.
The electronic whiteboard has powerful interactive functions, supporting multiple people to operate simultaneously, facilitating team collaboration and discussion. By connecting to the network, remote sharing and collaboration can also be achieved, breaking space limitations and allowing people from different regions to participate together.
The intelligent whiteboard also has rich software functions, such as various built-in teaching and office tools, including graphic drawing, document editing, formula input, etc. At the same time, it can easily save and share written content, making it convenient for subsequent viewing and organization.
In the field of education, touch screen whiteboard have brought a new experience to classroom teaching. Teachers can directly display teaching materials on the whiteboard, annotate and explain them, and attract students' attention. For example, in a geography class, the teacher displayed a world map on an intelligent whiteboard, marked key areas with different colored pens, and had students take the stage to mark their areas of interest on the whiteboard, enhancing their sense of participation and learning interest.
In corporate meetings, digital whiteboard also play an important role. Team members can work together on the whiteboard to draw a mind map, organize project processes, and discuss solutions. For example, at a new product development meeting, everyone presented their ideas and ideas directly on the whiteboard, making modifications and additions at any time, greatly improving meeting efficiency and communication effectiveness.
In training institutions, smart monitor can better meet personalized teaching needs. Teachers can flexibly adjust teaching content and methods based on the learning progress and characteristics of students. For example, in English training classes, using the voice function of the intelligent whiteboard for pronunciation practice and strengthening word memory through interactive games.
In addition, in the medical field, interactive whiteboard can be used for medical training and remote consultations. Doctors can display case data on the whiteboard for disease analysis and discussion.
In summary, intelligent whiteboards have brought efficient, convenient, and innovative experiences to fields such as education and office due to their outstanding features and wide range of application scenarios.
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Shenzhen Hengstar Technology Co., Ltd. , https://www.angeltondal.com