| 单词 | piston ring |
| 释义 | > as lemmaspiston ring piston ring n. a metal ring fitted around a piston to seal the gap between the piston head and the cylinder wall. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > piston > [noun] > parts of piston valve1735 piston rod1753 piston ring1754 piston head1824 gland1839 junk ring1839 slipper block1881 tail-rod1894 scraper ring1918 1754 Coalbrookdale Co. Ironworks Acct. in A. Raistrick Dynasty of Iron Founders (1953) 143 1 Piston Ring in four parts. 1851 Z. Colburn Locomotive Engine vi. 49 The piston rings used on the Boston and Maine [rail]road are made from a composition of 80 parts copper and 20 parts tin. 1936 Discovery Feb. 39/1 Steam leaking past the piston rings of the high-pressure cylinders. 1990 W. A. Livesey GCSE Motor Vehicle Stud. iii. 36/1 As it is not possible to make the piston a running fit in the cylinder bore and a perfect gas-tight seal, piston rings are fitted. < as lemmas |
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