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crack theory
, 关于Wegeners Continental Drift Theory
Wegener’s Continental Drift Theory, first proposed by German scientist Alfred Wegener in the early 20th century, proposed that the continents had once been joined together and had since moved apart, an idea that contradicted long-held popular beliefs. Wegene......
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Crustal abundance
The crust is the outermost layer of the solid Earth and composed of two major types of rocks: the oceanic crust and the continental crust. The abundance of crustal rocks varies with location and depth, but can be measured in parts per million (ppm) or billion (ppb). The continental crust contains ......
chemical selection
Introduction
In the field of chemistry, the opportunities for chemical selections are abundant. Chemicals serve a variety of purposes, from detergents to medicinal agents, and new discoveries are constantly being made. With this in mind, a chemist must be aware of the various chemical selections ......
China Petroleum Industry
China National Petroleum Corporation (CNPC) is the countrys largest oil and gas producer, distributor and trading company. As a public enterprise supervised by the central government, it has more than 200 subordinate and affiliated companies located across China and around the world.
CNPCs main b......
Iron ore pretreatment
Iron ore pre-treatment
Iron ore is a naturally occurring mineral consisting of various compounds, usually containing iron and varying amounts of other elements, from which metallic iron can be reduced in the form of pig iron or direct reduced iron (DRI) for use in a variety of steelmaking proces......
Design of flash furnace copper matte smelting workshop
Induction melting furnaces are used in the manufacturing industry to melt metals and alloys to produce castings and forge parts.
Induction melting furnaces are well suited for melting metals and alloys due to their high efficiency and relatively low energy costs. The furnace consists of an induct......
Telecommunications engineering design for metallurgical plants and mines
Metallurgical Plant and Mine Telecommunications Engineering Design
In the development of modern underground mining and metallurgical plant engineering, the establishment of an information-based engineering management system is essential. A key part of the engineering management system is the use......
Arsenic Wastewater Treatment Design
Processing Wastewater Containing Arsenic
Introduction
Arsenic is a toxic chemical element that exists in water either from natural sources such as rocks and soil or from human activities such as mining and industry. When the concentration of arsenic surpassed the limits set by public health orga......
Workshop Design of Cold-rolled Electrical Steel Strip
Design of Cold Rolling Electrical Steel Strip Workshop
Introduction
Cold rolling of electrical steel strip is a process that reduces the material thickness by roll pressing. Cold rolling steel strips have high demand in the market due to their application in electric motors, transformers and oth......
Clay brick and high alumina brick workshop design
Clay Brick and High Alumina Brick Manufacturing Plant Design
Clay brick and high alumina brick manufacturing plants are amongst the most important businesses in the industry and require careful planning in order to maximize their efficiency and profitability. This article will review the consider......
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