Abstract: The invention provides a force stimulation loading device and a working method thereof, the force stimulation loading device comprises: a containing body, a stretching mechanism and a twisting mechanism; the containing body is suitable for containing a gel encapsulating cardiomyocytes, and is made of a non-rigid material; the stretching mechanism is suitable for stretching or squeezing the containing body from opposite sides of the containing body to apply a stretching or squeezing force to the gel; the twisting mechanism is suitable for twisting the containing body to apply a twisting stress to the gel; the force stimulation loading device of the present invention is capable of simultaneously applying the stretching or squeezing force and the twisting stress to the gel encapsulating the cardiomyocytes through the stretching mechanism and the twisting mechanism, that is, applying the stretching or squeezing force and the twisting stress to the cardiomyocytes at the same time.

Abstract: An exhaust assembly, an upper cover assembly, and a cooking device. The exhaust assembly includes: an exhaust system can be opened and closed; an exhaust trigger member that is connected to the exhaust system and suitable for triggering the opening of the exhaust system; a reset trigger member that is connected to the exhaust system and suitable for triggering the closing of the exhaust system; and a toggle member adapted to move between an exhaust position and a close position, and when located at the exhaust position, the toggle member actions on the exhaust trigger member and makes the exhaust trigger member trigger the opening of the exhaust system, and when located at the close position, the toggle member actions on the reset trigger member and makes the reset trigger member trigger the closing of the exhaust system.

Abstract: The present disclosure provides a refrigerator including a vacuum sealing device disposed at an outer side of a door. The vacuum sealing device includes a lower support, an upper support and a vacuumization assembly. The upper support moves close to or away from the lower support under the drive of a driving device; after the upper support moves at a first speed until a sealing ring of the upper support is in contact with a sealing ring of the lower support, the upper support moves at a second speed toward the lower support until the sealing ring has a set deformation amount, and a first opening cavity and a second opening cavity are butt-joined to sealingly form a vacuumization region; the first speed is greater than the second speed; the vacuumization assembly is in communication with the vacuumization region through a pipe to perform vacuumization or depressurization for the vacuumization region.