horizontal helically卧式
Double helically双股螺旋
helically wrapped螺旋折叠
helically buckled螺旋弯曲
helically wound绕成螺旋状的;螺旋绕组
helically scan螺旋扫描
helically coiled螺旋
to apply helically螺旋式绕包
helically-finnd tube螺旋肋片管