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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 6. Отображено 6.
30-03-2018 дата публикации

Dig quick -witted hopper and have this tunnel that digs quick -witted hopper and dig machine

Номер: CN0207161082U

The utility model relates to a dig quick -witted hopper and have this tunnel that digs quick -witted hopper and dig machine belongs to tunnel excavation equipment field. Should dig quick -witted hopper and include the hopper body and locate the excavation piece of hopper body both sides, excavate towards hopper body bottom, the excavation piece is including first stand, second stand and excavate the tooth, and the hopper body is located to first stand through the mounting on, on first stand was located to the second stand, on the second stand was located to the excavation tooth, a plurality ofdenticles that the excavation tooth moved towards with the hopper body were opposite. The utility model discloses can excavate the operation in narrow and small space, will produce under the system of the strutting circumstances very near apart from the face to excavate in IV, V grades of country rock excavation process and also can carry out the breakage earlier, dig and set up rotatory pars contractilis ...

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19-01-2011 дата публикации

Test method for measuring plastic concrete permeability coefficient

Номер: CN0101949816A
Принадлежит:

The invention discloses a test method for measuring plastic concrete permeability coefficient. Six test pieces are manufactured; butter is mixed with coal ash or cement at the mass ratio of 1:2-2.5 to prepare a sealing material for sealing the test pieces and a die trial. The water pressure of a permeameter is added to 0.2 MP once, constant pressure is kept for 6 hours, and the water seepage height is taken by ten moieties by splitting the test pieces. The relative permeability coefficient of the test piece is calculated according to the following formula: Kr=aDm2/2TH. The average value of the relative permeability coefficients of the six test pieces is the permeability coefficient of the plastic concrete. The invention fills the blank of the plastic concrete test method, and effectively overcomes the problem that the test result in the mix proportion design of the existing impermeable wall plastic concrete can not truly reflect the practical impermeable ability, thereby better matching ...

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25-08-2010 дата публикации

Tunnel concrete lining formwork apparatus

Номер: CN0101298839B
Принадлежит:

The present invention discloses a tunnel concrete lining template device comprising a template system and needle beam system for bearing; the template system comprises template assembly and template pylon; the template assembly comprises arced left die, right die, top die and bottom die; the left die, right die, top die and bottom die are correspondingly connected to form template assembly with round section; the template pylon is hung on the top die; and bottom of the template pylon is respectively installed with left die, right die and telescopic standing demoulding device connected by the bottom die; the needle beam system comprises bearing needle beam placed in the upper part of the tunnel and pre and post supporting leg device for supporting the bearing needle beam; upper end face ofthe bearing needle beam is in slide contact with the top die and the needle beam is placed on the template pylon; and the bottom die is in the detachable structure; the bottom die in the detachable structure ...

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22-02-2012 дата публикации

Test method for measuring plastic concrete permeability coefficient

Номер: CN0101949816B
Принадлежит:

The invention discloses a test method for measuring plastic concrete permeability coefficient. Six test pieces are manufactured; butter is mixed with coal ash or cement at the mass ratio of 1:2-2.5 to prepare a sealing material for sealing the test pieces and a die trial. The water pressure of a permeameter is added to 0.2 MP once, constant pressure is kept for 6 hours, and the water seepage height is taken by ten moieties by splitting the test pieces. The relative permeability coefficient of the test piece is calculated according to the following formula: Kr=aDm2/2TH. The average value of the relative permeability coefficients of the six test pieces is the permeability coefficient of the plastic concrete. The invention fills the blank of the plastic concrete test method, and effectively overcomes the problem that the test result in the mix proportion design of the existing impermeable wall plastic concrete can not truly reflect the practical impermeable ability, thereby better matching ...

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06-07-2011 дата публикации

Method for determining modulus of elasticity of plastic concrete

Номер: CN0102116716A
Принадлежит:

The invention discloses a method for determining modulus of elasticity of plastic concrete. 3 150x150x300mm prism testing pieces are manufactured under industrial standards, the testing pieces to be measured are placed on a testing machine and starting reading is recorded, the testing machine is started, deformation values under various loads are recorded, and static compressive modulus of elasticity of the testing pieces are calculated in accordance with the following equation Ec = (P1/A) x (L/deltaL), wherein L is the full length of the testing pieces. The average value of the static compressive modulus of elasticity of the three testing pieces is regarded as the testing result. The method fills in the blank in the aspect of plastic concrete testing method, is characterized by adopting full gauge length for measuring the testing pieces, avoiding pre-pressing procedure and taking the slope of 40% secant as the elastic modulus value of the plastic concrete, and simultaneously eliminates ...

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25-03-2015 дата публикации

Construction expert information system applicable to extra-large underground cavern group

Номер: CN104463717A
Принадлежит:

The invention relates to a construction expert information system applicable to an extra-large underground cavern group. The system comprises a data information acquisition and wireless transmission platform and five main subsystems, wherein the data information acquisition and wireless transmission platform is a construction information acquisition and wireless transmission platform based on the Internet of Things, the five systems include the information collecting and processing subsystem, the construction progress visualization and real-time control subsystem, the construction real-time simulation and feedback subsystem, the early warning, forecasting and decision supporting subsystem and the extra-large underground cavern group construction site information management system based on B/S architecture. The construction expert information system has the functions in the aspects of construction information collection, construction progress organization and management, construction monitoring ...

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