IX卷QG-109. 英文版正文第5页 control method, force (FSW): -=---------Under the force control method, the plunge depth or travel speed can vary, within a specified range, during welding.
在这力的控制下,焊接期间,(搅拌针)的陷入深度和前进速度能在规定的范围内变化
UW-28 中(1) When the welding process is manual, machine, or semiautomatic, procedure qualification is required in accordance with Section IX.
此处是在说焊接的自动化程度,而不是焊接方法。。