Bascule

[bæskju:l]

(noun.) a structure or device in which one end is counterbalanced by the other (on the principle of the seesaw).

手打:曼弗雷德--From WordNet

(n.) In mechanics an apparatus on the principle of the seesaw, in which one end rises as the other falls.

手打:利蒂希娅

n. an apparatus of the lever kind in which one end is raised while the other is depressed.

安娜贝尔整理