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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 4. Отображено 4.
02-05-2023 дата публикации

Tennis ball serving device

Номер: CN116036562A
Автор: XIN HAIFENG, GAO NANA
Принадлежит:

The invention provides a tennis ball serving device which comprises a movable seat shell, a movable rotating mechanism is arranged in the movable seat shell, a mounting seat is fixedly connected to the edge side of the top of the movable seat shell, a protective shell is arranged on one side of the top of the mounting seat, and a control mechanism is arranged in the protective shell. Two electric telescopic rods are arranged at the top of the moving seat shell, the telescopic ends of the two electric telescopic rods are fixedly connected with a fixing seat, and a fixing frame is fixedly connected to the top end of the fixing seat. Under retraction of the elastic rubber stretching belt, a push rod is made to eject a tennis ball on a ball outlet frame to be launched, and therefore training and practicing are conducted; tennis balls are stored through the ball storage shell, the discharging rolling wheel and the rubber rolling column are driven by rotation of the motor, the tennis balls are ...

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08-03-2017 дата публикации

Acceleration sensor cooling device

Номер: CN0206002556U

The utility model relates to a cooling device, specific acceleration sensor cooling device that says so belongs to car exhaust system testing technology field. It is equipped with interconnected's three screw hole respectively including cooling off the main part on the three side of cooling main part, connect inlet tube, outlet pipe and jam bolt on the three screw hole respectively, cooling main part upper end is equipped with sensor seat, and cooling main part lower extreme is equipped with the base screw hole, connects the base on the base screw hole. The utility model has the advantages of simple and compact structure, rationally, low in manufacturing cost, the installation is simple, and the complete equipment quality is very little, can carry out the water cooling to the acceleration sensor that the high temperature measurement station was located for acceleration sensor can normally work, set up three screw hole, the convenience is installed in each position.

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26-05-2023 дата публикации

Tennis ball collecting device for tennis training

Номер: CN116159297A
Автор: XIN HAIFENG, GAO NANA
Принадлежит:

The invention provides a tennis ball collecting device for tennis training, which comprises a transmission fixing frame, a collecting frame is arranged on one side of the transmission fixing frame, a collecting mechanism is arranged in the collecting frame, a transmission mechanism is arranged in the transmission fixing frame, and a rotating mechanism is arranged at the bottom end in the transmission fixing frame. Supporting legs are fixedly connected to the two sides of the bottom end of the conveying fixing frame, and the bottom end of each supporting leg is fixedly connected with a steering mechanism. According to the tennis ball collecting device, a small driving motor rotates to drive a rotating shaft to rotate, so that a rubber roller collects tennis balls on a tennis court to enter a collecting frame, and then through cooperation of a material plugging rubber column and a movable rotating shaft, the tennis balls entering the collecting mechanism can be conveniently sucked backwards ...

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11-02-2015 дата публикации

Effective SCR (selective catalytic reduction) catalyst applied to purification of nitrogen oxide in tail gas of diesel engine

Номер: CN104338545A
Принадлежит:

The invention relates to an effective SCR catalyst applied to purification of nitrogen oxide in tail gas of a diesel engine, and belongs to the technical field of motor vehicle exhaust emission purification by a catalysis method. According to the catalyst, two or more of titanium, tungsten, silicon and zirconium oxide are used as a base coating, and one or more of vanadium oxide, manganese oxide and copper oxide are used as an active ingredient. The catalyst is coated on a cordierite honeycomb ceramic or iron-chrome-aluminum honeycomb metal carrier to be applied to post treatment of nitrogen oxide of tail gas of the diesel engine in a mode of a honeycomb catalyst. The catalyst has the advantages that the loss rate of the specific surface area of the coating under a high temperature reaction condition can be reduced by utilizing the close coupling structure among the oxides in the base coating, the heat stability and durability of the catalyst can be improved, and the service life of the ...

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