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

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Применить Всего найдено 3. Отображено 3.
08-12-2010 дата публикации

Impedance design method and device for printed circuit board

Номер: CN0101908082A
Автор: XIAOSHI WANG, ZHIYONG ZHONG, WANG XIAOSHI, ZHONG ZHIYONG
Принадлежит:

The invention provides an impedance design method for a printed circuit board. The impedance design method for the printed circuit board comprises the following steps of: acquiring requirements of each group of impedance and recording data of each image layer according to the input impedance parameter; acquiring data which corresponds to each image layer and establishing a data list according to the acquired data; circulating the data list, judging the type of each image layer layer-by-layer, and recording each image layer according to the type; and circulating different image layer records respectively, analyzing and judging the impedance reference relationship and corresponding signal shielding requirement of each image layer, and designing a corresponding image layer through software control. The invention also provides an impedance design device for the printed circuit board.

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Номер записи: 1
19-05-1993 дата публикации

GILDED HANDICRAFT DRAWING

Номер: CN0001072140A
Автор: XIAOSHI WANG, RONGJIAN FANG, YI QIAN, WANG XIAOSHI, FANG RONGJIAN, QIAN YI
Принадлежит:

Copper, silver and gold alloy are used as raw materials, which is machined based on original traditional Chinese realistic drawing by means of such techniques as mortising, arching, shearing, carving, grinding and chiseling to make up different carved parts. Through combination of the said carved parts by silver welding, polishing and gold (or silver) plating, a finished golden picture is obtained.

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Номер записи: 2
16-03-2011 дата публикации

Slot processing technology for printed circuit board

Номер: CN0101986771A
Автор: Wang Xiaoshi, Zhong Zhiyong
Принадлежит:

The invention provides slot processing technology for a printed circuit board, which comprises the following steps of: selecting a main drill layer to be exported; filtering slots in the printed circuit board; creating a primary data list in which exported cutter number corresponds to the slot number; and circulating the data list, reducing the original aperture of the printed circuit board one by one, and correspondingly acquiring a new drill, wherein the new drill corresponds to the arrangement order of a plurality of cutters. The slot processing technology for the printed circuit board can reduce complicated procedures of manual operation, ensure the safety of the original drill, effectively avoid drill breakage, and greatly improve the manufacturing yield of the printed circuit board.

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Номер записи: 3