Abstract: The present disclosure provides an image preview method and apparatus, an electronic device and a storage medium, where the method may include: determining a target object contained in a first image captured by the camera; cropping an image area containing the target object; and enlarging the image area to a predefined preview size, and previewing and displaying the enlarged image area in a shooting preview interface. Through the above method, a target object can be determined in a complex shooting scenario, and a user may observe the target object more clearly through a preview interface when an area where the target object is located is automatically enlarged and displayed, further avoiding the problem that it is difficult for the user to find the target object through movement of the head-mounted device due to an undersized field of view of an enlarged image area.

Abstract: The present disclosure provides an object sharing method and apparatus. The method can include: receiving target information sent by a second head-mounted device, where the target information is used to indicate a target object contained in a second image collected by the second head-mounted device; generating prompt information for the target object according to a first image collected by a first head-mounted device. Through the technical solution of the present disclosure, users wearing different head-mounted devices can share a target object in a same scenario. When any head-mounted device pays attention to a certain target object, users of other head-mounted devices can be prompted about the target object, improving interaction experience between users.

Abstract: The present disclosure provides an image preview method and apparatus, an electronic device and a storage medium, where the method may include: determining a target object contained in a first image captured by the camera; cropping an image area containing the target object; and enlarging the image area to a predefined preview size, and previewing and displaying the enlarged image area in a shooting preview interface. Through the above method, a target object can be determined in a complex shooting scenario, and a user may observe the target object more clearly through a preview interface when an area where the target object is located is automatically enlarged and displayed, further avoiding the problem that it is difficult for the user to find the target object through movement of the head-mounted device due to an undersized field of view of an enlarged image area.

Abstract: The present disclosure provides an object sharing method and apparatus. The method can include: receiving target information sent by a second head-mounted device, where the target information is used to indicate a target object contained in a second image collected by the second head-mounted device; generating prompt information for the target object according to a first image collected by a first head-mounted device. Through the technical solution of the present disclosure, users wearing different head-mounted devices can share a target object in a same scenario. When any head-mounted device pays attention to a certain target object, users of other head-mounted devices can be prompted about the target object, improving interaction experience between users.

Abstract: The present disclosure provides a piezoelectricity ceramic material. The piezoelectricity ceramic material includes main components that are represented by a general chemical formula of PbZraTib(Nb2/3Ni1/3)1-a-bO3+c%BaW0.5Cu0.5O3 d%SiO2 and satisfy the following condition: 0.1?a?0.4, 0.2?b?0.5, 0.1?c?3, and 0.05?d?1. The low-temperature sintering adopted by the present disclosure reduces energy consumption and reduces the volatilization of PbO, which avoids the fluctuation and deviation of the ceramic components, reduces the pollution to then environment caused by volatilization, and reduces the corrosion to the sintering machine as well. Furthermore, the present disclosure provides a piezoelectricity ceramic sinter and a method for processing the same, as well as a piezoelectricity ceramic device. In a multi-layer device, the device cost is greatly reduced.

Abstract: A method for producing ferrite ceramic includes the steps of providing a ferrite powder; oven-drying the ferrite powder; adding organic additives into the oven-dried powder and mixing them to form a ferrite slurry; debubbling the ferrite slurry and then tape casting it into a green tape; heating the green tape in air to 300-500° C. for 5 h to remove the organic additives from the green tape; sintering the organic additives removed green tape at 900-1000° C. for 2-5 h to obtain ferrite ceramic.

Abstract: The present disclosure provides a piezoelectricityity ceramic material. The piezoelectricityity ceramic material includes main components that are represented by a general chemical formula of Pb(Mn1/3Sb2/3)xZryTizO3+awt % WO3 and satisfy the following conditions: 0.02 ?x?0.1, 0.4?y?0.6, 0.4?z?0.6, and 0.5?a?3. Compared to related art, the products provided by the present disclosure have the following advantages: higher temperature stability, simpler production process, shorter production cycle, and convenient for mass production.

Abstract: A method for producing ferrite ceramic includes the steps of providing a ferrite powder; oven-drying the ferrite powder; adding organic additives into the oven-dried powder and mixing them to form a ferrite slurry; debubbling the ferrite slurry and then tape casting it into a green tape; heating the green tape in air to 300-500° C. for 5 h to remove the organic additives from the green tape; sintering the organic additives removed green tape at 900-1000° C. for 2-5 h to obtain ferrite ceramic.

Abstract: The present disclosure provides a piezoelectricity ceramic material. The piezoelectricity ceramic material includes main components that are represented by a general chemical formula of PbZraTib(Nb2/3Ni1/3)1-a-bpl O3+c%BaW0.5Cu0.5O3 d%SiO2 and satisfy the following condition: 0.1?a?0.4, 0.2?b?0.5, 0.1?c?3, and 0.05?d?1. The low-temperature sintering adopted by the present disclosure reduces energy consumption and reduces the volatilization of PbO, which avoids the fluctuation and deviation of the ceramic components, reduces the pollution to then environment caused by volatilization, and reduces the corrosion to the sintering machine as well. Furthermore, the present disclosure provides a piezoelectricity ceramic sinter and a method for processing the same, as well as a piezoelectricity ceramic device. In a multi-layer device, the device cost is greatly reduced.

Abstract: A water heater especially for bathroom includes a hair filter (1), a water self pumping pump (2), a heat exchanger (3), a water valve (5), a controller (6), an operator (7), three water flow resistance amplifiers (8) and a waste water tank (9). The heat exchanger can recover the heat from the waste water during bathing and preheat cold water. The waste water tank can reuse the waste bath water for flushing toilets. Said parts are assembled by pipes and electric circuits and arranged on the proper position in the bathroom.

Abstract: A water heater especially for bathroom includes a hair filter (1), a water self pumping pump (2), a heat exchanger (3), a water valve (5), a controller (6), an operator (7), three water flow resistance amplifiers (8) and a waste water tank (9). The heat exchanger can recover the heat from the waste water during bathing and preheat cold water. The waste water tank can reuse the waste bath water for flushing toilets. Said parts are assembled by pipes and electric circuits and arranged on the proper position in the bathroom.