1、环首螺栓
... ringbalance环秤 ringbolt环首螺栓 ringgage环规 ...
2、螺钉
... ring-tailed 尾部有环纹的 ringbolt 螺钉 ringbone 跗骨赘 ...
3、吊环螺钉
...密封环;vee～V形密封环,压环;vertical～垂直环;vortex～涡圈;washer～垫圈;waterstop～水密封圈;wear～密封环 ringbolt 吊环螺钉 ringer 鸣铃器,摇铃者 ..
4、带环螺栓
... ring-stiffenedcylinder加肋筒壳 ringbolt带环螺栓 ringbolt吊环螺钉 ...