Antagonistic pairs of muscles are muscle where one move the bone in one direction and the other moves it back the other way in transmission of nerve impulses to the muscles.
Demag, which manufactures and distributes telescopic and lattice boom cranes, is one of the leading mobile crane producers worldwide, with 2001 revenues of approximately $360 million.
A gantry crane is a type of overhead crane with supports that hold it up that are fixed in location.This means that the crane cannot move, so everything that it is going to lift must be brought to the crane. The supports form a large rectangular frame upon which the crane can move forward and back, and left and right. gantry crane is a type of overhead crane with supports that hold it up that are fixed in location.