roll-in and roll-out

Country music was undoubtedly one of the forerunners of rock and roll.

乡村音乐无疑是摇滚乐的先导之一。

《牛津高阶英汉双解词典》

Study on the wearing behavior of high Cr-cast iron roll caused by rolling and sliding movement indicates that it is a complete process of roll wearing primarily composed of contact fatigue and that mechanical properties of the roll material exert greater influence upon fatigue wearing resistance.

研究了高铬称铸铁轧辊材质的滚滑动磨损行为。实验结果表明高铬铸铁的滚滑动磨损过程是以接触疲劳为主的磨损过程，材料的机械性能对抗疲劳磨损性能有较大的影响。

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The application of the roll changer can greatly improve roll changing efficiency and safety of the straightener roll and the tension roll and can effectively reduce cost.

本实用新型的使用可极大地提高矫直辊与张力装置的换辊的效率、安全性并有效地降低成本。

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Rhythm and blues mutated into rock and roll.

节奏布鲁斯演变成为摇滚乐。

《牛津高阶英汉双解词典》

Based on the time concepts of falling speed of preliminarily crushed materials and roll ′ s pressing on materials, the formula for roll press can be derived from that of conven-tional roll crushers.

因此应用粗碎物料的下落和辊子挤压物料的时间概念，能够从辊式破碎机的转速推导出棍压机的转速公式。根据辊式破碎机的生产资料。

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The grinding efficiency of smooth roll and centrifugal impactor was researched through the milling test of eight_roller mill at same flow rate and different roll gap for C1A and C2A during processing.

在实际生产中对八辊磨粉机的光辊心磨系统C1A/C2A进行不同轧距下的研磨试验，探索在流量相对稳定的情况下，光辊心磨与撞击松粉机的粉碎效果。

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Not for nothing was he called the king of rock and roll.

他被称作摇滚之王不是没有道理的。

《牛津高阶英汉双解词典》

Roll the meat and tie it with string.

把肉卷起来，用线捆扎牢。

《柯林斯高阶英汉双解学习词典》

The immediate ancestor of rock 'n' roll is rhythm-and-blues.

摇滚乐直接源自节奏布鲁斯。

《柯林斯高阶英汉双解学习词典》

The article gives a description to the process parameters, roll and mandrel performance parameters, surface quality and dimensional accuracy of 57mm~ 76mm small-diameter pipes hot-rolled on two-roll tube mill or on three-roll tube mill.

介绍了用二辊或三辊轧机试轧φ57～76mm小直径热轧荒管的工艺参数、轧辊和芯棒的力能参数、荒管的表面质量及几何尺寸精度等。

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