QW-410.65 " Z: D" P# j$ J: Y+ eThe addition or deletion of grinding beyond that required to clean the surface or remove minor surface flaws(i.e.,use or nonuse of half-bead technique or similar technique). * }& ]+ \% P# _$ J# f3 @7 D请问这里的half-bead technique 指的是什么技术?是说多道焊接时的每道之间压一半吗?