10 Shijiazhuang steel market price quotes
January 10, 2007 Shijiazhuang steel market price quotes Name of product specification Material ...
Cat : 202209
January 11 Shenyang Steel Market Price Quotes
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Central city today's steel prices Northern Region Beijing Baotou Tianjin 邯郸 Shi ...
CAD software based on assembly association
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Regardless of the CAD software, the most basic function is to build a 2D or 3D geometric model, whi ...
January 12 Shanghai steel market hot and cold coil prices
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Name of product specification Materials Steel factory / origin Price (yuan/ton) Than yesterda ...
Vegetable zucchini soil preparation technology
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Combined with the land preparation, 5000 kg of organic fertilizer is applied per mu, and after ...
Life-threatening gas monitoring informationization guarantees coal mine safety (Part 1)
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The continuous rise in coal prices has made many companies profitable. Some people only care about ...
Cutting difficult materials with silicon nitride ceramic tools
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Cutting chilled cast iron chilled cast iron has high hardness, rough surface, and there are casti ...
Reciprocating vacuum pump working principle (with photos)
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Reciprocating vacuum pump (referred to as reciprocating pump), also known as piston vacuum pump, b ...
Tapered Roller Bearings and Pump Shaft Bearing Installation
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First, the bearing installation: Bearing installation must be dry, clean environment conditions. Ca ...
Non-blocking pump impeller structure design
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With the development of science and technology, the application area of ​​pumping soli ...
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Ground source heat pump and water source heat pump hot and cold source difference: water source heat ...
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Large workpieces are often processed on small machine tools because they cannot be clamped. It is d ...