screw helicoid

例句：

1. 1. The screw helicoid was the key to the puzzle.
   螺旋螺钉是解开谜题的关键。
2. 2. The screw helicoid is used in many industrial applications.
   螺旋螺钉在许多工业应用中都有使用。
3. 3. The screw helicoid is easy to install and remove.
   螺旋螺钉安装和拆卸都很方便。