Qing Dynasty porcelain background and characteristics

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In the pre-stage of the Qing Dynasty porcelain Jiaqing Dynasty, the legacy of the Qianlong Dynasty was basically preserved, but on the whole, it was far less than the prosperity of the Qianlong. At that time, there were some fine products in the pastels and blue-and-white flowers, especially t ...

Sewage pump working principle and characteristics

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Sewage pump and other pump impellers, pressure chambers, are the two core elements of the sewage pump. The advantages and disadvantages of its performance, it also represents the superior performance of the pump, sewage pump sewage pump anti-clogging performance, efficiency and cavitation performan ...

How Submersible Pumps Work

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The submersible pump (SUBMERGEDPUMP) is a widely used water treatment tool. Unlike ordinary pumps, it works underwater and most of the pumps work on the ground. First, the submersible pump works: The suction tube and the pump must be filled with liquid before starting the pump. After the pump is ...

Solar Frontier's CIS thin film efficiency reaches 1…

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Solar Frontier has enabled the conversion efficiency of CIS thin-film solar cells to a record level through the use of sputtering and selenization processes. The current CIS efficiency using the co-evaporation process has reached a record of 20.3%. The 18.6% record of conversio ...

Foamed cement insulation board advantages

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Foamed cement insulation board is made of ordinary Portland cement, fly ash, foaming agent, admixture, etc., and is made of composite, stirring, foaming, cutting and other light foaming insulation materials. The foam hole with a diameter of 1-3 mm is formed inside the concrete to make the conc ...

Basic requirements for laser glass

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(1) The illuminating mechanism that activates ions must have metastable state to form a three-level or four-level mechanism; and it is required that the metastable state has a long life, so that the number of particles is easy to accumulate and reverse. In order to make the laser glass have hi ...

Boshen Tools won the Provincial Intellectual Property A…

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The reporter learned from the Science and Technology Bureau of Shijiazhuang yesterday that the “2012 Hebei Intellectual Property Advantage Cultivation Project Patent Award” jointly organized by the Hebei Provincial Science and Technology Department and the Provincial Intellectual Prop ...