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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 8. Отображено 8.
04-03-2009 дата публикации

Method for lowering molten aluminum electric resistivity

Номер: CN0101376925A
Принадлежит:

The invention discloses a method for reducing the resistivity of molten aluminum, which comprises the following steps: (1) when the molten aluminum is melted, potassium fluoborate powder of 0.2 weight percent and 0.4 weight percent of the molten aluminum is taken; (2) all the potassium fluoborate powder is blown from the bottom of the molten aluminum into the molten aluminum by argon, and the flow of the argon is controlled to be 20l/min to 30l/min; (3) impurities produced in the reaction in the molten aluminum are removed, and low-resistivity molten aluminum is obtained. The method has obvious effect in removing the impurities in the molten aluminum and can effectively reduce the resistivity of the molten aluminum, thereby improving the product quality and reducing the rejection rate; meanwhile, the potassium fluoborate powder has absorption and dissolution reaction with the filam and non-metal impurities in the molten aluminum after entering into the molten aluminum; the reaction can ...

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21-04-1993 дата публикации

Technology for measuring insulation resistance of corrosion-resistant layer of underground pipeline by means of frequency conversin and selection

Номер: CN0001071259A
Принадлежит:

A frequency-changeable signal source and two frequency-selecting indicators for transmilting and receiving are used to actually measure the electric level and test frequency of buried pipeline in arbitrary length. By calcalation with the said parameters and others measured in conventional method, the average insulating resistance of anticorrosion layer for the buried pipeline may be found out without digging and influence to normal working state of the pipeline. Its advantages are high accuracy and better repeatability.

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21-01-1998 дата публикации

Spraying and dripping pipe and its application method

Номер: CN0001170498A
Принадлежит:

The said pipe for water saving irrigation in farm and orchard and transformation of desert and saline-alkali land is a water conveying cavity, which has at certain interval water sprayer, water drip or water infiltrating device mounted for different purpose. When used, the said pipe is laid on or buried in the ground to be irrigated and water is poured into the water conveying cavity for water saving irrigation. The present invention has obvious water saving effect and can keep soil porous, control the humidity of soil and promote the growth of crop and other plant.

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03-12-1997 дата публикации

Irrigation and storage permeation pipe and its application method

Номер: CN0001166268A
Принадлежит:

The pipe for water saving irrigation and desert control is constituted by coating one siphonage layer and one outer coating layer with outer water flowing holes outside the water conveying cavity with inner water flowing holes. When used, it is buried or laid in the field to be irrigated and water is filled into the water conveying cavity so as to provide water needed for plant growing. It can save water, prevent soil hardening and control soil humidity effectively.

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11-06-2008 дата публикации

Wear-proof alloy stick hammer

Номер: CN0101195102A
Автор: LI SHAOZHONG, SHAOZHONG LI
Принадлежит:

The invention discloses an abrasion-resistant alloy hammer (an abrasion-resistant alloy steel bridge) which is used for a squirrel-cage type crusher. The invention comprises a shaft and a cylinder, wherein the cylinder adopts abrasion-resistant alloy to be cast and is connected fixedly with the shaft. The cylinder of the invention is resistant to high temperature and abrasion, thereby service life can be increased greatly, and using cost can be saved.

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08-03-2000 дата публикации

Controller for photosynthesis of plant and application method thereof

Номер: CN0001246274A
Принадлежит:

A controller for the photosynthesis of plant features that a high-voltage electric field is applied across the space between the high position above the plant and ground, and regulating the intensityand kind of electric field to control the speed of photosynthesis. Its advantages are adjustable voltage amplitude, controllable direction of electric field, and switchable kinds of electric field.

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17-08-2011 дата публикации

Method for evaluating corrosion in buried pipeline

Номер: CN0102156089A
Принадлежит:

The invention provides a method for evaluating corrosion in a buried pipeline. The method for evaluating the corrosion in the buried pipeline comprises the following steps of: preliminary evaluation of corrosion detection in the buried pipeline, indirect detection and evaluation of the corrosion in the buried pipeline, direct detection and evaluation of the corrosion in the buried pipeline, and validity evaluation of direct evaluation ICDA of the corrosion in the buried pipeline and reevaluation time determination. At present, many in-service pipelines of petroleum enterprises sequentially enter a frequent accident period and an important stage of maintenance and update. By the method for evaluating the corrosion in the buried pipeline, levels of safe operation management and technology of the buried pipeline are improved, economic loss of personnel and facilities due to sudden accidents can be reduced, and safe production is ensured; the application potential of the in-service old pipelines ...

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06-05-1992 дата публикации

BRIQUETTING METHOD FOR POWDERED ALLOY

Номер: CN0001060874A
Принадлежит:

According to the process of this invention, waste alloy material and Si-Fe powder, Si-Mn powder, or Mn-Fe powder are used as raw materials. By such technological steps as formulating, dry and wet mixing, pocketing material, stirring in an enforcing stirrer, shaping by pressing and drying, an alloy powder aggregate as a new alloy is obtained, whose physical and chemical properties are approximate to those of original alloy block and are conformed to GB4008-83 standard. It can replace original alloy for deoxidation, which meets requiremet of deoxidation for stokehold.

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