关于单杠双杠的英语作文

关于单杠双杠的英语作文
关于单杠双杠的英语作文

关于单杠双杠的英语作文
说明文：
The horizontal bar,also known as the high bar,is an apparatus used by male gymnasts in Artistic Gymnastics.It traditionally consists of a cylindrical metal (typically steel) bar that is rigidly held above and parallel to the floor by a system of cables and stiff vertical supports.Gymnasts typically wear leather grips while performing on the bar.Current elite-level competition uses a more elastic fiberglass core rail similar in material to the rails used in the women's uneven bars and men's parallel bars apparatus.
The gymnastics elements performed on the horizontal bar are regulated by a Code of Points.A bar routine,which is a sequence of several bar skills,usually includes giant swings with various grips (overgrip,undergrip,dorsal grip,mixed grip),in-bar work,turns,release and regrasp skills,and a dismount.The horizontal bar is often considered one of the most exciting gymnastics events due to the power exhibited by gymnasts during giant swings and spectacular aerial releases and dismounts that often include multiple flips or twists and,in some cases,airborne travel over the bar
The parallel bars were invented by Friedrich Ludwig Jahn.In 1819 the first transportable parallel bars were described.In 1856 in Germany Hermann Otto Kluge used tubes to make the parallel bars and the horizontal bar adjustable.He used them in his gym.In Tolstoy's Anna Karenina,published between 1873-1877,their use for exercise is described
Parallel bars is an apparatus used by male gymnasts in artistic gymnastics.Gymnasts may optionally wear grips when performing a routine on the parallel bars,although this is uncommon.
The apparatus consists of two parallel bars that are held parallel to,and elevated above,the floor by a metal supporting framework.The bars are composed of wood or other material,with an outer coating of wood.The vertical members of the supporting framework are adjustable so the height of the bars above the floor and distance between the bars can be set optimally for each gymnast.