Abstract: A processing mechanism is provided, including: a welding head, where the welding head has a welding mark end surface at an end in a second direction, and a middle portion of the welding mark end surface in a first direction protrudes, so that the welding mark end surface is curved in an arch shape; and welding teeth distributed on the welding mark end surface. Since a front portion or rear portion of the welding mark end surface in a reciprocating vibration direction is bent away from a to-be-welded workpiece, when the welding mark end surface is inclined due to friction, a pressing force of the front portion or rear portion of the welding mark end surface on the to-be-welded workpiece can be reduced, avoiding or reducing the risk of cracks occurring in the front portion or rear portion of a welding mark region.

Abstract: The compressor has a housing; a first rotor disposed spaced apart from the housing, the first rotor being capable of rotating along a first axis. The first rotor including a first portion and a second portion with opposite thread rotating direction; a first spacer, at least a portion of the first spacer being disposed between the first portion and the housing; and a first driving device connected with the first spacer to control the first spacer to move along a direction of the first axis.

Abstract: An Internet Key Exchange (IKE) negotiation control method, device and system are provided. In the method, a receiving end receives an IKE negotiation message sent by an initiating end, and parses the IKE negotiation message to obtain IKE negotiation message information; in a case that a current IKE negotiation is in an aggressive mode, the receiving end acquires triple information of message and initiating end identity information according to the IKE negotiation message information, and searches for and acquires a virtual negotiation interface, matched with the initiating end, on the receiving end according to the triple information of message and the initiating end identity information. An IKE negotiation control device and system are also provided.