| 单词 | packing leather |
| 释义 | > as lemmaspacking leather ΚΠ 1857 Sci. Amer. 25 July 362/3 Pumps... The leak is stopped by simply shifting the packing leather. a1884 E. H. Knight Pract. Dict. Mech. Suppl. 652/1 Packing leather, a leathern ring on a piston or plunger, traversing against the cylinder or barrel to make a tight joint therewith. < as lemmas |
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