平衡木 balance beam这个beam指的是 梁;桁;(船等的)横梁 很自然的平衡木就是balance beam 吊环 rings; swinging rings 跳马 vaulting horse用…
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... swinging cross 混线,碰线 swinging rings 摆动吊环 swinging staging 可移吊式脚手架...
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Swinging rings in mid-air 空中吊环
swinging rings screw 吊环螺钉
That gymnast is the present champion of the swinging rings.
那位体操运动员是本届吊环冠军。
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The swinging rotating joint consists of spherical body, thread joint sleeve, locking screw nut, large copper washer and two spherical rings.
本发明摆动旋转接头由球型接头体，螺纹接头套，锁紧螺帽，大铜垫和两个球面转环构成。
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