1 A semi elliptic and flaky brachium part with a pin hole is welded on the connecting position between the rod-shaped folding arm and the hanging bar.

2 Brachium:The part of the upper arm or forelimb extending from the shoulder to the elbow.

3 Enhancement brachium triceps and deltoid muscle: Lying face downward, right hand griping dumb and raising up.

4 An approach to the estimation of the motion and structure parameters of brachium and leg based on monocular image sequence is proposed.

5 The image of crossed arms also comes through in the name because brachium was Latin for “arm.”