flexible bag软油箱flexibleadj.柔韧的；灵活的；易弯曲的；可变通的flexible significance意义弹性flexible disk storage软磁盘存储器flexible accumulation灵活积累flexible organization弹性组织flexible use of words词的活用flexible roll forming变截面辊弯成型flexible beam systems柔性梁系统flexible manipulators柔性机械臂flexible oil pipeline软质输油管线flexible polymorphism可变多态性