The helical spring can no longer be used. 盤簧不能再用了。
The coil,or helical,spring consists of a wire or rod wound into a helix and is primarily intended for axial direct compression or tension loads. 卷簧，或者說螺旋形彈簧包括一條盤成螺旋形的金屬絲盤條，它起初是用於軸向直接壓力和拉伸。
After removing the first check from the backflow valve body, place on a flat surface with the coil spring facing up. 從防迴流閥閥體上拆卸第一止回閥后，要使螺旋彈簧面朝上放在平面上。
The multilink coil spring suspension wasn't too stiff or too loose, which would make the driver feel uncomfortable. 在多重螺旋彈簧懸架不是太硬或太松，這將使司機感到不舒服。
