以下为句子列表：
英文: A new type of Double-acting Contactless Sliding-vane Pump was put forward to the defect analyzed on Sliding-vane, which uses roller to control the locus of sliding vane to insure the minute gap between the stator and sliding vane.
中文: 摘要通过分析滑片泵存在的缺陷，提出了一种利用滚柱控制滑片运动轨迹，使滑片与定子内表面保持微小间隙的新型双作用无接触滑片泵。
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