以下为句子列表：
英文: It is made of high quality aluminium alloy section, convenient on adjusting torque of roller, equipped with unique self-locking device, large rolling picture, suitable for long and thick fabric picture.
中文: 优质铝合金材质，可方便调节滚筒的扭力，具有独特的自锁装，收卷画面空间大，更适用长、厚材质画面展示。
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英文: Self-locking triple-vein safety helmet of auto-movement with flat peak, usually for leaders on construction sites or safety inspectors.
中文: 平顶三筋锁紧自调式安全帽，多用于工地领导及安全检查员佩带。
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英文: The arm with self-locking device, easy for adjust, more safety.
中文: 设有托臂自锁装置,调整方便,使用安全.
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英文: The arm with self-locking device, easy for adjusted, more safety.
中文: 设有托臂自锁装置,调整方便,使用安全.
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