It might be a loose connection.

可能是连接松了。

There must be a loose connection.

一定是接头松了。

The television isn't working, is there a loose connection?

电视机坏了，有没有哪一点接线不紧?。

It is a very simple method for project management and has loose connection to software development.

它是项目管理的一种简单的方法，并且和软件开发有松弛连接关系。

Rail connection bolts loose, resulting in track displacement, will also cause the tower.

轨道连接螺栓松动，造成轨道位移，也会引起倒塔。