welding progress meaning in Chinese

《英汉医学词典》welding progress
焊接过程

because of the nonlinear, time-variability and uncertainty of the submerged-arc welding progress, the characteristic of accurate mathematic model being hard to establish, we can adopt the fuzzy control technology to design the welding dolly control system, and the couple closed-loop fuzzy control velocity system and fuzzy control algorithm for the speed of the welding dolly are researched based on the control system of submerged ? arc welding
同时长时间工作也容易使人产生疲劳,影响焊接质量。针对埋弧焊过程的非线性、时变性和不确定性,难以建立精确的数学模型等特点,采用模糊控制来设计焊接小车控制系统,同时研究了焊接小车双闭环模糊调速系统,并针对焊接小车速度的双闭环模糊控制算法进行讨论。