Abstract: An adjustable printing-height three-dimensional printer includes a base, an elevating module, a working platform, a nozzle bracket, a printing nozzle, and a driver. The elevating module is disposed on the base. The working platform is located proximal to the base. The nozzle bracket is operably engaged with the first elevating module. The printing nozzle is operably engaged with the nozzle bracket and is configured to print on the working platform. The driver is configured to drive the elevating module to move the nozzle bracket along an axial direction, so as to make the printing nozzle to move toward or away from the working platform.

Abstract: An adjustable printing-height three-dimensional printer includes a base, an elevating module, a working platform, a nozzle bracket, a printing nozzle, and a driver. The elevating module is disposed on the base. The working platform is located proximal to the base. The nozzle bracket is operably engaged with the first elevating module. The printing nozzle is operably engaged with the nozzle bracket and is configured to print on the working platform. The driver is configured to drive the elevating module to move the nozzle bracket along an axial direction, so as to make the printing nozzle to move toward or away from the working platform.

Abstract: A method for volume adaptation, a mobile electronic device and a computer program product are disclosed. According to the method for volume adaptation, a sound producing function is started. At intervals, a present first environmental noise is sampled, a present set playing volume of the mobile electronic device is inquired about, and a second environmental noise occurring on setting the playing volume is obtained. Finally, the playing volume is adjusted according to the first environmental noise and the second environmental noise. In this way, the present invention is able to automatically adjust the playing volume thereof in response to the environmental noises of different times, which largely increases the convenience of using the mobile electronic device.

Abstract: A method for volume adaptation, a mobile electronic device and a computer program product are disclosed. According to the method for volume adaptation, a sound producing function is started. At intervals, a present first environmental noise is sampled, a present set playing volume of the mobile electronic device is inquired about, and a second environmental noise occurring on setting the playing volume is obtained. Finally, the playing volume is adjusted according to the first environmental noise and the second environmental noise. In this way, the present invention is able to automatically adjust the playing volume thereof in response to the environmental noises of different times, which largely increases the convenience of using the mobile electronic device.

Abstract: In a computer database synchronization method, a first database with first object data and a second database with second object data are established in a personal computer and an electronic dictionary, respectively. First and second synchronization status tables are established for each of the first and second object data, respectively. The synchronization status tables are modified from a first state, indicating that the corresponding object data is synchronized with the first or second database, to a second state, indicating that the corresponding object data is not synchronized with the first or second database, when the corresponding object data is edited. Synchronizing of the first and second databases can begin when a communications link is established between the personal computer and the electronic dictionary.