free roller
自由辊
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Sub-power and free roller roller two.
分动力辊筒和自由辊筒两种。
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Generally sub-power and free roller roller two.
大体分动力辊筒和自由辊筒两种。
Drawing force under free roller dies drawing is much smaller than that under fixed rolls drawing.
辊模拉拔辊拉力明显小于固定辊模拉拔。
Murphy scored from second on an infield hit after shortstop Daniel Descalso could not handle Wright's slow roller and the ball rolled free.
WSJ: Wigginton dash boosts Cardinals past Mets 6-3
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