flexible PCB柔性印刷电路板flexibleadj.柔韧的；灵活的；易弯曲的；可变通的flexible operation操作灵活flexible amendment柔性修宪flexible vibration弹性振动flexible towelette柔软纸巾flexible education柔性教育flexible transport无轨运输flexible adhesives柔性粘合剂flexible dimension挠性尺寸flexible vane pump柔性叶片泵flexible endoscopy可曲式内镜检查