| 单词 | contraction-rule |
| 释义 | > as lemmascontraction-rule contraction-rule n. a pattern-maker's rule made slightly longer than the standard one to allow for the contraction of the casting in cooling. ΘΚΠ the world > relative properties > measurement > measuring instrument > [noun] > for measuring length > graduated strip of wood, etc. rule1340 ruler1530 measure1555 scale1607 foot-rule1662 two-foot rule1664 joint-rule1680 inch-rule1850 inch-measure1851 stationer's rule1866 contraction-rule1874 measure-strip1887 1874 E. H. Knight Amer. Mech. Dict. I. 612/2 Contraction-rule. 1887 P. N. Hasluck Pattern Maker's Handybk. i. 11 The adoption of a contraction-rule seems to dispose of the question of shrinkage [of castings] in the minds of most pattern makers. < as lemmas |
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