Abstract: A disposable highly-protective oral-nasal mask comprises a fixing part. A notch is formed in the portion, corresponding to an oral cavity, of the fixing part. An oral cavity coverage part is arranged at the notch, corresponding to the oral cavity, of the fixing part, and is detachably connected to the fixing part. A first fold part with upward external folds is further arranged on the oral cavity coverage part. A second fold part with downward external folds is arranged on a nasal cavity coverage part. Two easily deformed components are located in accommodating cavities which are formed in the fixing part in one-to-one correspondence with the easily deformed components. Both accommodating cavities are arranged in the length direction of the fixing part. One accommodating cavity is located between the oral cavity coverage part and the nasal cavity coverage part, and the other accommodating cavity is located above the nasal cavity coverage part.

Abstract: The present disclosure provides an excimer laser system. A master oscillator chamber may generate laser pulses with a narrowed line width and a small energy by means of a line width narrowing module, as a seed light. The seed light is refracted by a master oscillator wavefront engineering box and then incident into a power amplifier chamber through a beam splitting system. The beam splitting system, a first high reflectance mirror, a second high reflectance mirror and a third high reflectance mirror may constitute a quadrilateral annular optical path, The power amplifier chamber may have a first pair of Brewster windows and a second pair of Brewster windows, wherein the first pair of Brewster windows is located in a first optical path of the annular optical path along with a discharging electrode of the power amplifier chamber, and the second pair of Brewster windows is located in a second optical path of annular optical path which is parallel to a first amplification optical path.

Abstract: Disclosed is an excimer laser composite cavity, comprising a laser discharge cavity, a laser output module, a line-width narrowing module, and a laser amplification module. The laser discharge cavity contains work gas for generating laser when it is activated by an excitation source. The laser discharge cavity, the laser output module, and the line-width narrowing module constitute a line-width narrowing cavity configured to narrow down a line-width of the laser generated by the work gas. The laser discharge cavity, the laser output module, and the laser amplification module constitute an amplification cavity configured to amplify power of the laser with the line-width having been narrowed down by the line-width narrowing cavity.

Abstract: Disclosed is an excimer laser composite cavity, comprising a laser discharge cavity, a laser output module, a line-width narrowing module, and a laser amplification module. The laser discharge cavity contains work gas for generating laser when it is activated by an excitation source. The laser discharge cavity, the laser output module, and the line-width narrowing module constitute a line-width narrowing cavity configured to narrow down a line-width of the laser generated by the work gas. The laser discharge cavity, the laser output module, and the laser amplification module constitute an amplification cavity configured to amplify power of the laser with the line-width having been narrowed down by the line-width narrowing cavity.

Abstract: In a method for managing a Customer Premises Equipment (CPE), an Auto-Configuration Server (ACS) designates a first designated instance number for a first instance object. A message is then sent to the CPE. The message carries the first designated instance number for the first instance object and is adapted to notify the CPE to take the first designated instance number as an instance number for the first instance object.

Abstract: In a method for managing a Customer Premises Equipment (CPE), an Auto-Configuration Server (ACS) designates a first designated instance number for a first instance object. A message is then sent to the CPE. The message carries the first designated instance number for the first instance object and is adapted to notify the CPE to take the first designated instance number as an instance number for the first instance object.