flexible bag软油箱flexibleadj.柔韧的；灵活的；易弯曲的；可变通的flexible epoxy putty柔性环氧腻子flexible restriction柔性约束flexible rate system伸缩性汇率制flexible welding rod软焊条flexible programming软程序设计flexible feed-back软反馈flexible steel cable软钢丝绳flexible elbow hinge可屈曲肘部绞链flexible disk driver软盘机, 软盘驱动器Flexible package can软包装罐头