Abstract: A packet processing method, including receiving a first packet from a first switch, where the first packet belongs to a service flow that flows from a first device to a second device, determining a service chain through which the service flow passes, determining a forwarding path of the service flow according to the service chain through which the service flow passes, modifying the first packet to obtain a second packet, where the second packet belongs to the service flow, and a valid payload of the second packet includes a valid payload of the first packet and forwarding path indication information, generating a first flow table according to the forwarding path of the service flow, controlling a communications interface to send the first flow table to the first switch, and sending the second packet to the first switch.

Abstract: The invention discloses a 3D printer based on liquid-solid chemical reaction deposition and operating methods thereof, comprising a sealed forming chamber, a powder container, a forming container, a powder spreading mechanism, and a three-axis linkage mechanism in the sealed forming chamber. The three-axis linkage mechanism moves a nozzle in the sealed forming chamber according to a movement path planning of a control system of the 3D printer. A liquid supply device is provided outside the sealed forming chamber. The liquid supply device contains a gel-like reactant. The nozzle is a liquid nozzle. The liquid nozzle communicates with the liquid supply device through a following conduit.

Abstract: Embodiments of the present disclosure disclose a method, apparatus and system for controlling mounting of a file system. A specific embodiment of the method includes: receiving network attribute information of a target client sent by a target server as first network attribute information; determining, based on the first network attribute information, whether the target client has permission to mount to a target file system; and sending, in response to determining that the target client has permission to mount to the target file system, an identification of the target file system to the target server.

Abstract: A packet processing method, including receiving a first packet from a first switch, where the first packet belongs to a service flow that flows from a first device to a second device, determining a service chain through which the service flow passes, determining a forwarding path of the service flow according to the service chain through which the service flow passes, modifying the first packet to obtain a second packet, where the second packet belongs to the service flow, and a valid payload of the second packet includes a valid payload of the first packet and forwarding path indication information, generating a first flow table according to the forwarding path of the service flow, controlling a communications interface to send the first flow table to the first switch, and sending the second packet to the first switch.

Abstract: A method and an apparatus for processing a data packet based on parallel protocol stack instances, where lower-layer protocol processing is performed, using a first protocol stack instance. An associated second protocol stack instance is determined using a target socket after the target socket that is needed to perform upper-layer protocol processing on the data packet is determined, and the upper-layer protocol processing is performed, using the target socket and the second protocol stack instance. The second protocol stack instance that performs the upper-layer protocol processing is determined using the target socket, and hence, a technical problem that protocol processing cannot be performed on a data packet because a protocol stack instance specified by an application (APP) conflicts with a protocol stack instance specified by a network adapter is resolved.

Abstract: The present invention discloses a sidewall structure of a hopper car, including: an integrally formed upper side beam (1), an integral sidewall panel (2), an integrally formed lower side beam (3) and a lower sidewall (4), wherein the upper side beam (1) is riveted with the integral sidewall panel (2) at the lower side; the sidewall panel (2) is riveted with the integrally formed lower side beam (3) at the lower side; the sidewall panel is of a panel-column structure in which the wall panel is integrated with a side column, and the side column is arranged at the inner side of the car body; the lower side beam (3) is riveted with the lower sidewall (4) at the lower side.

Abstract: An automatic observation apparatus for detecting mineral samples comprises a base (1), a supporting arm (2), a sample fixing device (3), a stepper motor (4), a high-definition camera (5) and a control system (6). A refractometer is fixed on the base (1). A vertical through hole is formed at the top end of the supporting arm (2), and a lifting rod (211) penetrates through the vertical through hole and is matched with the vertical through hole in shape. A cavity is formed at the top end of the supporting arm (2), a gear (216) is mounted in the cavity, and the gear (216) is meshed with a rack (215) of the lifting rod (211).

Abstract: A method and an apparatus for processing a data packet based on parallel protocol stack instances, where lower-layer protocol processing is performed, using a first protocol stack instance. An associated second protocol stack instance is determined using a target socket after the target socket that is needed to perform upper-layer protocol processing on the data packet is determined, and the upper-layer protocol processing is performed, using the target socket and the second protocol stack instance. The second protocol stack instance that performs the upper-layer protocol processing is determined using the target socket, and hence, a technical problem that protocol processing cannot be performed on a data packet because a protocol stack instance specified by an application (APP) conflicts with a protocol stack instance specified by a network adapter is resolved.

Abstract: An automatic observation apparatus for detecting mineral samples comprises a base (1), a supporting arm (2), a sample fixing device (3), a stepper motor (4), a high-definition camera (5) and a control system (6). A refractometer is fixed on the base (1). A vertical through hole is formed at the top end of the supporting arm (2), and a lifting rod (211) penetrates through the vertical through hole and is matched with the vertical through hole in shape. A cavity is formed at the top end of the supporting arm (2), a gear (216) is mounted in the cavity, and the gear (216) is meshed with a rack (215) of the lifting rod (211).

Abstract: The present invention discloses a sidewall structure of a hopper car, including: an integrally formed upper side beam (1), an integral sidewall panel (2), an integrally formed lower side beam (3) and a lower sidewall (4), wherein the upper side beam (1) is riveted with the integral sidewall panel (2) at the lower side; the sidewall panel (2) is riveted with the integrally formed lower side beam (3) at the lower side; the sidewall panel is of a panel-column structure in which the wall panel is integrated with a side column, and the side column is arranged at the inner side of the car body; the lower side beam (3) is riveted with the lower sidewall (4) at the lower side.

Abstract: This invention has provided a direct manufacturing methodology of customized lingual orthodontic brackets by selective laser melting. The procedure is as follows. First of all, measure the dentition data and construct the 3D CAD model of the teeth through reverse engineering. Then a single soleplate of the lingual bracket contacting the tooth surface, as well as the ideal slot position is designed based on the teeth features. The designed models are later imported into the SLM machine and used to produce the brackets with desired materials directly. This method can actualize customized manufacture with highly accuracy, producing highly matched brackets all at once. The invention not only saves time and cost, but also has wide adaptation range and is able to adopt various raw materials. Different raw materials can be utilized in one step to accommodate specific capacity requirement of different parts of the brackets.

Abstract: This invention has provided a direct manufacturing methodology of customized lingual orthodontic brackets by selective laser melting. The procedure is as follows. First of all, measure the dentition data and construct the 3D CAD model of the teeth through reverse engineering. Then a single soleplate of the lingual bracket contacting the tooth surface, as well as the ideal slot position is designed based on the teeth features. The designed models are later imported into the SLM machine and used to produce the brackets with desired materials directly. This method can actualize customized manufacture with highly accuracy, producing highly matched brackets all at once. The invention not only saves time and cost, but also has wide adaptation range and is able to adopt various raw materials. Different raw materials can be utilized in one step to accommodate specific capacity requirement of different parts of the brackets.