double coil spring的意思|示意

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双圈弹簧

双层螺旋弹簧 ... double-wound coil 双线绕线圈 double coil spring 双层螺旋弹簧 double coil direction finder 双线圈测向器 ...

双圈弹簧 ... 密封圈弹簧 packing spring 双圈弹簧 double coil spring 套圈弹簧 ferrule spring ...