Various methods, devices, and systems are described for cloud federation in a cloud computing network including bridging computing resources between an enterprise and a cloud or among multiple clouds. In one further forms of this technique, the adjusting of parameters for the engine includes retarding spark timing andor interrupting the spark ignition; reducing or retarding direct injection timing or fuel amount andor interrupting the direct injection; andor the adjusting of parameters for the generator including increasing the field of the alternator or adding an electrical load. Therefore, it is possible to prevent excessive load from being applied to the laser oscillator at the time of actual working. A second metal sheet is disposed on the second portion. When a solder block is inserted into the tail portion, the clip arms can deflect to secure the solder block in a predetermined position in the tail portion.