Half-elliptic leaf spring 半椭圆形弹簧 ; 半卵形弹簧 ; 半扁圆形弹簧

half-elliptic spring 半椭圆形弹簧 ; 半卵形弹簧

half elliptic spring 半椭圆形弹簧 ; 弓形弹簧 ; 半椭圆弹簧

half elliptic ring 半椭圆形弹簧

Half-elliptic leaf ring 半椭圆形弹簧

half-elliptic spring semi-elliptical spring 半椭圆形弹簧

elliptic half-band filter 椭圆半带滤波器

Elliptic half-band filters 椭圆半带滤波器组