Boiler feed pumps are generally equipped with speed control devices, such as hydraulic couplings, the role is based on changes in unit load to adjust the flow to the pump to reduce throttling losses, thereby saving energy.

Hydraulic coupling speed control feed pump (hereinafter ref…

1. When the high voltage switch dynamic characteristic tester is grounded on the spot, why should the ground wire be connected first and then the breakout line?

Answer: In the field test, since the high-voltage switch (especially 220Kv or more) often has a hig…

In a new study, researchers from Shanghai Jiao Tong University in China, Emory University and Purdue University in the United States used DNA to construct simple machines that consist of DNA arrays made up of DNA Modular DNA structural units that switch between two different shap…

Product Name Specification Material Origin Price Than Yesterday Last Week Line Φ6.5mm Q235 Ma Steel 4980 0 -50 430 Common Line Φ8mm Q235 Ma Steel 4980 0 -50 430 High Line Φ6.5mm Q235 Ma Steel 5000 0 -50 400 High Line Φ10mm Q235 Masteel 5000 0 -50 400 High Line Φ6.5-12mm Q335 Ji…

• Model NO.: HT150
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Reporter Ni Baiming reports from the Beijing National Energy Administration that a series of large-scale wind power generation bases in Hexi Corridor in Gansu Province that have exceeded one million kilowatts to ten million kilowatts have already started construction, and Inner Mongolia grassla…

Single crystal/polycrystalline silicon and thin film solar cells. At the State Council executive meeting on August 26, 2009, polysilicon was “named” due to overcapacity and redundant construction. The industry's expectations for thin film replace…

Gravity beneficiation is the most important in physical beneficiation. So far, all mineral processing methods have been applied to a mineral processing method. It has a wide range of applications and a large processing capacity. It is any method of mineral proce…