| 单词 | three-high |
| 释义 | > as lemmasthree-high three-high adj. see quots. ΚΠ 1877 E. H. Knight Pract. Dict. Mech. Three-high Roll (Metal-working), a rolling-apparatus in which three rollers are arranged in a vertical series. 1881 Trans. Amer. Inst. Mining Engineers 1880–1 9 185 Three-high train, a roll-train composed of three rolls, the bar being entered on one side between the bottom and the middle roll, and on the other side between the middle and the upper roll. < as lemmas |
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