Method for intensifying paper product

Method for intensifying paper product

A method for strengthening paper product features that a die set whose shape is same as the shape of the paper product to be srengthened is used to press and heat the both surfaces of the paperboard of the paper product at 200-500 deg.C under 20-40 Kg/sq.cm for 5-60 s.

Single-antenna ship attitude measurement method and device and electronic equipment

The invention relates to a single-antenna ship attitude measurement method and device and electronic equipment. The method comprises the following steps: acquiring carrier phase observation values of each group of satellites in a single-antenna GNSS (Global Navigation Satellite System) of a target ship; carrier phase observation values of adjacent epochs are differenced by using an epoch difference algorithm, and a single-antenna TDCP speed measurement model under a geocentric coordinate system is determined; based on the single-antenna TDCP speed measurement model under the geocentric coordinate system, constructing a carrier speed model under the geocentric coordinate system; according to the carrier speed model under the station center coordinate system and the gravitational acceleration of the target ship, attitude information of the target ship is obtained through solving. According to the invention, the attitude measurement of the ship is realized by using the single antenna on the ...