forward and backward bending tester 往复弯曲试验机
backward-bending labor supply curve 后弯劳动供给曲线
backward bending supply curve 向后弯曲供给曲线
Backward bending labor supply curve 后弯的劳动供给曲线
backward bending 线后弯
The negatively sloped portion of a supply curve like that in Figure 5.1(b) is frequently referred to as a "backward-bending" supply curve;
图5.1（b）中的供给曲线的负斜率部分就是通常所谓的“向后弯曲”的供给曲线；
West Indian dance in which the dancers keep bending over backward and passing under a pole that is lowered slightly each time.
林波舞一种西印度群岛的舞蹈，舞者须向后仰并穿过一支水平杆，每次都要比前一次仰得更低。
Pain from isthmic spondylolisthesis tends to be worse when standing or walking, or during activities that involve bending backward.
因峡部裂性腰椎滑脱引起的疼痛往往在站立或行走后以及包括向后弯曲等活动时加重。
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