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158results about How to "Ensure normal exposure" patented technology

Aluminum alloy/hydroboron hydrolysis reaction-based miniature hydrogen production system and hydrogen production method

The invention relates to an aluminum alloy/hydroboron hydrolysis reaction-based miniature hydrogen production system and a hydrogen production method thereof, belonging to the field of hydrogen preparation technique. The aluminum alloy/hydroboron hydrolysis reaction-based miniature hydrogen production system comprises a hydrogen production generator and a liquid storage tank, wherein the hydrogen production generator is coated by the liquid storage tank; an outlet at the bottom end of the liquid storage tank is connected with a hydrogen production generator liquid delivery pipe, a liquid delivery control valve, a stainless steel pipe and a reaction region; the top end of the liquid delivery pipe is connected with a hydrogen storage chamber; the hydrogen production generator is divided into a reaction chamber and the hydrogen storage chamber by a separation film; and two symmetrical circular truncated cones are arranged at the bottom of the reaction region. The hydrogen production method of the aluminum alloy/hydroboron hydrolysis reaction-based miniature hydrogen production system is characterized in that the hydroboron solution input velocity of the liquid delivery control valve is regulated to realize the start/stop of the hydrolysis reaction of the hydrogen production system, so as to stabilize the hydrogen pressure of the hydrogen production system. The aluminum alloy/hydroboron hydrolysis reaction-based miniature hydrogen production system and the hydrogen production method have the characteristics of being simple in structure, and safe and reliable, and suitable for supplying hydrogen for portable fuel cells or internal combustion engines.
Owner:CHINA JILIANG UNIV

Welding fixture for nuclear fuel assembly positioning grillwork

The invention discloses a welding fixture for a nuclear fuel assembly positioning grillwork, and relates to the welding technology of the nuclear fuel assembly positioning grillwork. The welding fixture aims at solving the problems that a conventional welding fixture is complex in structure, the design accuracy is worse, and the welding quality is influenced. A follow fixture comprises a square frame defined by four positioning plates, and the length and the width of the square frame are adjustable; each positioning plate is provided with a positioning pin, an upper row of light through holes and a lower row of light through holes; and a sleeve fixture comprises an upper cover plate and a base plate, a through hole is formed in the position, corresponding to a sleeve, on the base plate, a plum-blossom-shaped hole is formed in the position, corresponding to the sleeve, on the upper cover plate, and four symmetrically-arranged protrusions are installed on the periphery of the plum-blossom-shaped hole. The welding fixture is simple in structure and easy to machine, and the welding requirement can be completely met; compared with a conventional welding manner and a conventional welding fixture, the welding quality can be greatly improved; and the follow fixture serves as a transition structure for assembling and welding the fixture, the conversion continuity of the two parts is guaranteed, all welding seam connection can be completed at a time, and the welding fixture is suitable for welding of the nuclear fuel assembly positioning grillwork.
Owner:HARBIN INST OF TECH

Automatic sorting method and device for commodity, and computer readable storage medium

Embodiments of the invention relate to the field of big data applications, and disclose an automatic sorting method and an automatic sorting device for a commodity, and a computer readable storage medium. In the invention, the automatic sorting method for the commodity comprises the steps of: acquiring the first sorting dimension information when the user performs a keyword search, wherein the first sorting dimension information is used to represent the historical screening recording of the N commodities matching the keyword, and N is a constant greater than 1; obtaining the second sorting dimension information that is used to represent the selling heat of the N commodities; acquiring a first sorting level of the first sorting dimension information and the second sorting dimension information; sorting the N commodities according to the first sorting dimension information, the second sorting dimension information, and the first sorting level. The automatic sorting method and device forthe commodity, and the computer readable storage medium provided by the invention are capable of improving the exposure rate and conversion rate of high quality commodities, and improving the user experience.
Owner:SHENZHEN SPRINGWOODS HLDG CO LTD

Offshore sunken pile accurate positioning operation method

Provided is an offshore sunken pile accurate positioning operation method. The offshore sunken pile accurate positioning operation method comprises the steps that (1) a first foundation pile is installed through GPS positioning in a driven mode; (2) a holder base which can carry out 360-degree rotation is installed in the center of the pile top of the first foundation pile, three laser distance measuring sensors which are arranged on the same plane and are parallel to one another are installed on the holder base, and lasers emitted by the laser distance measuring sensors are located on the same plane and are parallel to one another; (3) the actual position of a second sunken pile is found out through the three laser distance measuring sensors arranged on the first foundation pile, and the second sunken pile is installed in a driven mode; (4) the actual position of a third sunken pile is found out through the three laser distance measuring sensors arranged on the first foundation pile and three laser distance measuring sensors arranged on the second sunken pile, and the third sunken pile is installed in a driven mode; (5) accurate measurement of sunken piles in the whole engineering region is accomplished in an alternate mode. According to the offshore sunken pile accurate positioning operation method, real-time and accurate positioning can be carried out on the positions of the sunken piles, and site operators can have timely and accurate control over the positions of the sunken piles.
Owner:CCCC THIRD HARBOR ENG

Characteristic value determination method and device based on multimedia file, medium and equipment

PendingCN112232846AOvercome the problem of weakened display effectImprove display effectAdvertisementsEngineeringData science
The invention provides a characteristic value determination method based on a multimedia file, a characteristic value determination device based on the multimedia file, a computer readable storage medium and electronic equipment, and relates to the technical field of computers. The characteristic value determination method based on the multimedia file comprises the following steps of determining aprediction characteristic value for the multimedia file, wherein the prediction characteristic value is a random value; determining the exposure of the multimedia file at the first moment according to the prediction characteristic value; adjusting the prediction characteristic value according to the comparison of the exposure and the target exposure; and determining the adjusted prediction feature value as a feature value of the multimedia file at a second moment, the occurrence time of the second moment being later than the first moment. According to the feature value determination method based on the multimedia file, a problem that the display effect of the multimedia file is weakened can be solved to a certain extent, and then the fixed output quantity of the multimedia file is completed by adjusting the feature value of the multimedia file, so the display effect of the multimedia file is improved.
Owner:TENCENT TECH (SHENZHEN) CO LTD
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