Abstract: A method for detecting a surface welding quality of friction stir welding includes: acquiring a continuous surface depth image of a welding seam; intercepting a surface depth image segment of the welding seam with a proper step size, and dividing the intercepted surface depth image segments of the welding seam into a front reference region, a thinned region and a rear reference region; judging whether flatness of the front reference region is less than a threshold, and if yes, taking a height of the front reference region at this point as a latest reference height; if no, judging whether the flatness of the rear reference region is less than the threshold, and if yes, taking a height of the rear reference region at this point as the latest reference height; if no, taking the reference height of previous depth image segment as the latest reference height; and calculating a difference.

Abstract: A method for detecting a surface welding quality of friction stir welding includes: acquiring a continuous surface depth image of a welding seam; intercepting a surface depth image segment of the welding seam with a proper step size, and dividing the intercepted surface depth image segments of the welding seam into a front reference region, a thinned region and a rear reference region; judging whether flatness of the front reference region is less than a threshold, and if yes, taking a height of the front reference region at this point as a latest reference height; if no, judging whether the flatness of the rear reference region is less than the threshold, and if yes, taking a height of the rear reference region at this point as the latest reference height; if no, taking the reference height of previous depth image segment as the latest reference height; and calculating a difference.

Abstract: A food grinder includes a grip mechanism having a flip cover body pivotally connected to a handle body, a cylindrical cutter set detachably mounted in the handle body, and a driving mechanism mounted in the grip mechanism. The grip mechanism includes first and second switch units electrically connected in series between a driving unit and a power supply unit. When the first switch unit is manually actuated to turn on while the second switch unit is actuated to turn on by the flip cover body as the flip cover body pivots toward a closing position, the driving unit operates with electric power supplied from the power supply unit to drive rotation of a cylindrical cutter of the cylindrical cutter set disposed in the handle body, such that a food ingredient in an inlet in the handle body is cut and grinded by the rotating cylindrical cutter.

Abstract: Implementations of this specification provide a method and an apparatus for processing ledger transactions using smart contracts in a blockchain. An example method performed by a blockchain node includes receiving data characterizing an ledger transaction for a target property, the data characterizing the ledger transaction including a unique identification code of the target property and a ledger content; generating the ledger transaction based on the data characterizing the ledger transaction for the target property, and releasing the ledger transaction to a block of the blockchain; and after the ledger transaction is verified by a consensus of the blockchain, storing the unique identification code of the target property and the ledger content in a distributed database of the blockchain.

Abstract: A food processor includes a base, a processing box and at least a cutter. The base is disposed with a motor inside, the motor is disposed with a rotating shaft; the processing box is assembled to the base and is disposed with a charging opening and a discharging opening. The cutter rotates synchronously with the rotating shaft of the motor, the cutter is assembled inside the processing box and is disposed with a cutter dish with several dropping grooves and several blades fixed on the cutter dish, the blade has several sets of cutter teeth arranged side by side, each set of cutter teeth has at least a large cutter tooth and at least a small cutter tooth.

Abstract: A food processor includes a base, a processing box and at least a cutter. The base is disposed with a motor inside, the motor is disposed with a rotating shaft; the processing box is assembled to the base and is disposed with a charging opening and a discharging opening. The cutter rotates synchronously with the rotating shaft of the motor, the cutter is assembled inside the processing box and is disposed with a cutter dish with several dropping grooves and several blades fixed on the cutter dish, the blade has several sets of cutter teeth arranged side by side, each set of cutter teeth has at least a large cutter tooth and at least a small cutter tooth.