Abstract: An earphone includes a first earphone body, a connecting arm, and a second earphone body, where the connecting arm is connected to the first earphone body and the second earphone body. A center of an outer surface of the first earphone body, a center of an outer surface of the second earphone body, and a center of an outer surface of the connecting arm are connected to each other to form a symmetry plane. First and second vent holes in the earphone are symmetrical with respect to the symmetry plane. A main antenna unit and a parasitic antenna unit in the earphone is symmetrical with respect to the symmetry plane.

Abstract: The present disclosure provides a display substrate and a manufacturing method thereof. The display substrate includes: a base substrate; a plurality of first light shielding members arranged on the base substrate and extending in a first direction; a plurality of light filtering units and a plurality of second light shielding members arranged at a side of the first light shielding member away from the base substrate, the plurality of light filtering units being arranged at intervals, the second light shielding member being filled in a gap between adjacent light filtering units, the second light shielding member extending in a second direction intersecting the first direction; a planarization layer arranged at a side of the plurality of light filtering units and the plurality of second light shielding members away from the base substrate; and a spacer arranged at a side of the planarization layer away from the base substrate.

Abstract: A light-emitting device includes a first electrode, a light-emitting stacked layer, a second electrode and a passivation layer. The light-emitting stacked layer is connected to the first electrode. The passivation layer includes a first passivation portion and a second passivation portion. The first passivation portion covers a surface of the light-emitting stacked layer away from the first electrode. The first passivation portion is provided therein with a first via hole. The second electrode is connected to the light-emitting stacked layer through the first via hole. The second passivation portion covers a sidewall of the light-emitting stacked layer and extends to a side of the light-emitting stacked layer away from the second electrode. A distance between a portion of the second passivation portion exceeding the light-emitting stacked layer and the light-emitting stacked layer is greater than a thickness of the first electrode.

Abstract: Disclosed are a method and a device for downloading a file. The method includes: when receiving a download request of a file, acquiring attribute information about the file, and learning information about the length of the file according to the attribute information about the file; when the length of the file goes beyond a preset value, segmenting the download request into at least two fragments of download requests; sending the at least two fragments of download requests to at least two data nodes to request to download corresponding fragments, and obtaining the at least two fragments; and according to the at least two fragments obtained by download, obtaining the file. By segmenting the download request into a plurality of fragments of requests, the present invention achieves the parallel download of the plurality of fragments of requests, thereby greatly improving the download efficiency of a file.

Abstract: The provided is a distributed file system, file access method and a client device. The file access method includes: accessing a file catalog stored by a master server, and obtaining routing information of a meta server associated with a to-be-accessed file from the master server; accessing the meta server according to the obtained routing information, and obtaining meta information of the to-be-accessed file from the meta server; and accessing the to-be-accessed file from multiple node servers according to the obtained meta information.

Abstract: Disclosed are a method and a device for downloading a file. The method includes: when receiving a download request of a file, acquiring attribute information about the file, and learning information about the length of the file according to the attribute information about the file; when the length of the file goes beyond a preset value, segmenting the download request into at least two fragments of download requests; sending the at least two fragments of download requests to at least two data nodes to request to download corresponding fragments, and obtaining the at least two fragments; and according to the at least two fragments obtained by download, obtaining the file. By segmenting the download request into a plurality of fragments of requests, the present invention achieves the parallel download of the plurality of fragments of requests, thereby greatly improving the download efficiency of a file.

Abstract: The invention relates to a road traffic control method and corresponding traffic facilities. The method includes: setting roads mounted or vehicles mounted devices for controlling queens passing; setting associated traffic facilities which assist controlling queens; guiding, including and controlling to vehicle flows in various directions by the above devices and facilities; arranging the vehicle queens into sequential array at the same time or by turns in roads and crosses according to preset procedure. By the method, the vehicle flows can pass continuously or non-continuously without crossing or with less crossing in multi-driveway road. The invention has small investment, wide application and can greatly improve the cross passing ability.

Abstract: The invention relates to a road traffic control method and corresponding traffic facilities. The method includes: setting roads mounted or vehicles mounted devices for controlling queens passing; setting associated traffic facilities which assist controlling queens; guiding, including and controlling to vehicle flows in various directions by the above devices and facilities; arranging the vehicle queens into sequential array at the same time or by turns in roads and crosses according to preset procedure. By the method, the vehicle flows can pass continuously or non-continuously without crossing or with less crossing in multi-driveway road. The invention has small investment, wide application and can greatly improve the cross passing ability.