... tor 轮廓投影仪 contour rolling mill 轮廓轧机 contour seamer 无导轨缝纫机 ...
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Water is also used as a coolant for rolling - mill roll to maintain their contour and lengthen their service life.
热轧机的轧辊也需用冷却水来保持轧辊的外形和延长它的使用寿命。
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