The proposed method to cluster customers is to combine response-surface method, adaptive-conjoint analysis technology and system-clustering method according to the value of customers needs utility.
The utility model can reduce the strength and speed of a descending welding head to a frame surface, and the utility model efficiently overcomes chip incline caused by poor back flowing of lead tin.
本实用新型可减缓焊头下降到达框架表面的力量和速度，有效地克服由于铅锡回流不良而引起的芯片倾斜。
3
The utility model relates to a bicycle component, particularly a saddle with ventilating holes on the surface.