Examples disclose a method and system for merging textures. A guide bar is adjustable relative to the chassis and the clutch cover, but stationary while in a secured position. A sweating phenomenon of the precious metal member can be suppressed while spark abrasion, oxidation abrasion and abnormal abrasion of the precious metal member are suppressed. A carbon nanotube structure is provided in thermal contact with the microchannel structure, the carbon nanotube structure receiving heat from the cooling fluid in the microchannel structure and dissipating the heat into an external medium. Besides, as the dummy patterns are formed in a pre-metal dielectric layer and their depth is well controlled, tungsten filled in the dummy patterns will not contact with the device area below the pre-metal dielectric layer, and thus will not affect the performance of the device.