| 单词 | pivoted lever |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔rocker arm〕A pivoted lever used in an internal combustion engine to transfer cam or pushrod motion to a valve stem.摇臂：一种装有枢轴的用于在内燃机里把凸轮或挺杆的运动转移到阀门的阀杆上的控制杆美国传统〔tilt hammer〕A heavy forge hammer having a pivoted lever by which it is tilted up and then allowed to drop.杵锤：锻造用的重锤，通过带枢轴的杠杆将它倾斜抬起，然后落下美国传统 |
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