Abstract: A refrigerator includes a water dispensing device, and the water dispensing device includes a water tank, a drain pipeline, a beverage making chamber, in which a capsule support for receiving a beverage powder capsule and a capsule piercer for puncturing the capsule operatively are provided; and a dispenser, communicated with an outlet of the beverage making chamber, including a beverage outlet of which the prepared beverage flows out. The refrigerator has a water dispensing device capable of making a beverage, such as coffee, milk tea, or the like, based on demands from a user, thereby satisfying diverse drinking demands from people and solving problem of a single function of an existing refrigerator.

Abstract: Disclosed are a device and a method for measuring laser displacement. The device comprises an interferometric measurement module, a laser light source module, a signal modulation module, a control processing module and an optical vernier demodulation module. The control processing module controls the signal modulation module to apply a light source modulation signal to the laser light source module, so that the laser light source module provides two laser beams with fixed frequency difference to the interferometric measurement module. The control processing module controls the interferometric measurement module to perform interferometric measurement. During measurement, lasers respectively interfere in two Fabry-Perot cavities in the interferometric measurement module, and are detected by two photodetectors to form main and secondary measurement interference signals.

Abstract: The invention relates to a myopia prophylactic and therapy appliance, which includes a suction head and a handle. The end of the suction head is in the form of a round flat opening. A blowhole is set on the wall of the handle. During the course of using the appliance, first, put the suction head snugly on the eyeball in order to vent the air of the suction head. Then, negative pressure is produced in the suction head by nipping the blowhole. When a hand grasps, or nips, the blowhole, a negative air pressure is produced. The handle is then pushed and pulled resulting in the suction head tip attracting the eyelid and eyeball and causing same to move back and forth. The suction head sucks the eyelid and the eyeball, and moves forward and backward by pulling forward and pushing backward the handle. Because the eyeballs are controlled by 6 extraoculars, when they are pulled and pushed, there will be a little distortion of the eyeballs. With this distortion, there will be a strong massage to the ciliary muscle.

Abstract: The invention relates to a myopia prophylactic and therapy appliance, which includes a suction head and a handle. The end of the suction head is in the form of a round flat opening. A blowhole is set on the wall of the handle. During the course of using the appliance, first, put the suction head snugly on the eyeball in order to vent the air of the suction head. Then, negative pressure is produced in the suction head by nipping the blowhole. When a hand grasps, or nips, the blowhole, a negative air pressure is produced. The handle is then pushed and pulled resulting in the suction head tip attracting the eyelid and eyeball and causing same to move back and forth. The suction head sucks the eyelid and the eyeball, and moves forward and backward by pulling forward and pushing backward the handle. Because the eyeballs are controlled by 6 extraoculars, when they are pulled and pushed, there will be a little distortion of the eyeballs. With this distortion, there will be a strong massage to the ciliary muscle.