Search results for keyword: lakes
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Environmental Challenges in Urban Areas
Urban areas are increasingly burdened by environmental challenges. As the number of city-dwellers and the demands for services expand, so does the impact of human activities. This can be seen in the form of air and water pollution, inadequate sanitation and......
1046 
Sophie
25 uses
Social media has become one of the most widespread mediums of communication and entertainment in modern society. We use it to stay connected with family and friends, to learn about new products and services, and for entertainment and news. Social media has grown to be very popular in recent years,......
46S20/4 use
Global Positioning System (GPS)
The Global Positioning System (GPS) is a satellite-based navigation system that provides location and time information in all weather conditions to users around the world. It is a network of satellites orbiting the Earth at an altitude of approximately 12,000 mil......
Hardness grade, hardness range and metallographic structure of ductile iron
，不是翻译
Introduction
Ductile iron (also known as spheroidal graphite iron, abbreviated SG Iron or SG) is a type of cast iron. It has a nodular graphite shape in a matrix formed by ferrite, pearlite, and sometimes ferrite-pearlite. It is stronger, more ductile, and more fatigue resistant than tr......
Table 9 of high-quality section steel commonly used steel grades and imported steel grades
High Quality Steel Grades and Imported Steel Grades
Steel is one of the most important materials used in industrial production. It is the backbone of construction and manufacturing industries, and it can be found in the form of steel bars, sheets, and wires. Due to its immense versatility, steel......
ISO standard for surface processing of plate (strip)
Surface treatments for steel plates (with) according to the ISO standards
Surface treatments of steel plates are usually in accordance with certain international standards, for different applications require different levels of performance and specifications. To ensure the effectiveness and safet......
GBJ 125-89 Basic terminology standard for water supply and drainage design
GBJ 125-89 Water Supply and Wastewater Design Basic Terms and Definitions
GBJ (General Code of Construction) 125-89 is a set of codes and standards that regulate the design and construction of water supply and wastewater systems. This document establishes basic terms and definitions that must be ......
Commonly used English terms for energy and power systems (Part 2)
Quantities
Kilovolt-Amperes (KVA): The apparent power in a circuit expressed in 1,000 volt-amperes.
Kilowatts (kW): A unit of measure of power, equal to 1,000 watts.
Megawatt (MW): A unit of measure of power, equal to one million watts.
Apparent Power (VA): The vector sum of real and reactive ......
crystalline flake graphite
Granular Graphite Nanocrystals
Granular graphite nanocrystals have recently become one of the hottest topics in materials science. This is due to the fact that these nanomaterials have the potential to revolutionize modern technology. They possess an incredible array of properties that make them ......
metal deposit
Metallic Ore Deposits
Metallic ore deposits are concentrations of valuable metals located in the Earth’s crust. These ore deposits can be formed by many different geological processes, and are common in many different deep mines and quarries around the world. Metallic ore deposits can be found ......
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