潜函病的英文：
bends

bends是什么意思：
v. （使）弯曲，成角度，拉；弯腰；专心；歪曲，篡改；低（头）；屈从
n. 弯曲处，拐弯，弯道

If we bend a rod, it bends.
如果我们弯曲一个杆，它会弯曲。

The frictional restraint to bending has an effect on bending.
弯曲的摩擦约束力对弯曲有影响。

An instance of bending,warping,or crumpling;a bend or bulge.
弯曲，褶皱;鼓胀

pipe bend with female thread
两头带阴螺纹的弯头

The rope seems to bend down.
那个绳索看起来要向下延伸。