tubular slug
高能物理专业英语翻译B-35-SCIdict学术词... ... 阶级枕；端轴承 block， step 管状块 block， tubular 铍钽酸钙叹q blomstandite; betafite ...
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一种管状的金属块 Piston Ring
电动门滑动控制机构工作过程如下：有电时，齿轮与齿条啮合，由于摆块顶住齿条使管状电机带动外套管转动。
The sliding door control mechanism works as follows: when there is electricity, the gear and rack meshing, as the pendulum block against the rack to drive the outer tube tube motor rotation.
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