螺旋环 meaning in English

helical collar
screw collar
spiral collar
spiral ring

Screw ring for oil containers
贮油容器用螺旋环
Hf - connection 29 66 with screw collar ring , characteristic impedance 50 ; mating dimensions
特性阻抗欧姆的带螺旋环的29 66射频连接件.连接
" caliber i " is equipped with a second hand stop mechanism , in other words , when the crown has been pulled out , a spring gently bends itself around the balance shaft and the second hand stops , hence permitting the watch to be set accurately to the second
螺旋环使钟表的节律保持始终如一，平衡轮的安装具有防震功能。如果拉动发条冠就会有一个弹簧轻柔地靠在平衡轮环上，使手表停止运行。这样手表可以分秒不差地进行调节。