When if the habit is admired, sleeping, can curveknee or the pillow is placed below knee, with pulling force of slow down sarcous.
如果习惯仰睡时，可将膝盖弯曲或在膝盖下放置枕头，以减缓肌肉的拉力。
2
Anterior pads can improve the campaign to prevent the effects of collision, according to the design ofkneecurve tubular sheath, similar to 216 can provide basic protection.
前侧垫片能提高在运动中预防擦撞的效果，依膝部曲线设计的筒状护套，能提供类似216的基本防护。
3
The position ofknee point of Phase-frequency characteristic mean value curve is invariant, but the kurtosis of the curve near the knee point decreases.