| 单词 | heart motion |
| 释义 | > as lemmasheart motion heart motion n. Mechanics (now rare) reciprocating motion generated by a heart cam. ΚΠ 1804 Repertory Arts, Manuf., & Agric. 4 323 And sidewise by the heart motion as it is called (to which it is kept up by a spring). 1888 R. Marsden Cotton Spinning (ed. 3) x. 292 The traverse of this rail was affected by means of a heart-shaped cam.., an arrangement then and since known as the heart motion. 1915 Cotton Year Bk. & Diary 208 The yarn is wound and formed on the bobbins by a chain-and-bowl lifting arrangement, worked by a heart motion. < as lemmas |
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