spring nest造句

Force is transmitted from the spring nest to main lever through a diameter steel rod long.
Mechanical brake consists of a pair of brake shoes applied to the underside of the brake paths by the action of the compressed spring nest operating through a system of levers.
Thinking the cold finished, I suppose, they'd all gone back out _ as field mice are wont to do _ to make their spring nests in burrows under stones and in the hollows of fallen trees.
It's difficult to find spring nest in a sentence. 用spring nest造句挺难的