单词：roller bed
roller bed的用法和样例：
例句
- The device is insensitive to the vibration of a strip or sheets while moving along the roller.对带或板材沿辊道运动时的振动不敏感。
- Due to its speciality,the gravitational roller conveyor must be equipped with brake rollers in its table roller.重力式辊筒输送机由于其自身的特性，必须在辊道中设置制动辊。
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