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bascule n. 活动结构 活动结构 bascule n 1: a structure or device in which one end is counterbalanced by the other (on the principle of the seesaw) Bascule \Bas"cule\ (b[a^]s"k[-u]l), n. [F., a seesaw.]
In mechanics, an apparatus on the principle of the seesaw, in which one end rises as the other falls. [1913 Webster] {Bascule bridge}, a counterpoise or balanced drawbridge, which is opened by sinking the counterpoise and thus lifting the footway into the air. [1913 Webster]
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