It is of built-in type, single seal face, single spring and unbalanced type with hook spring transmission, and the direction of rotation of spring depending on that of axis.

内装式、单端面、单弹簧、非平衡型，带钩弹簧传动，弹簧旋向与轴旋向有关。

youdao

He said, take a spring to outer space and we'll hook up some objects to them and see how fast they move and do a comparison.

他说,把一个弹簧带到外太空,往上面挂物体,看看它们运动的快慢,并进行对比

耶鲁公开课 - 基础物理课程节选

You hook one end of the spring to a wall and you pull it from rest by some amount and you attach the one kilogram mass to it.

你把弹簧的一端固定在墙上,然后拉伸一段距离,接着你把 1 千克物体固定在上面

耶鲁公开课 - 基础物理课程节选

The research team found that not only did the lymphatic vessels spring up inside the tumour, but they also appeared to even hook up with those outside the tumour - creating a ready-made highway to carry cancer cells to other parts of the body.

BBC: tumour in breast