| 单词 | piston head |
| 释义 | > as lemmaspiston head piston head n. the disc or cylindrical part forming the end of a piston, which is attached to the piston rod. 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 1824 London Lit. Gaz. 31 July 491/2 The pressure of the air on the piston-head again forces it down on the head of the cylinder. 1847 Sci. Amer. 26 June 313/3 The water presses against the piston head and forces it up. 1928 C. F. S. Gamble Story N. Sea Air Station xiii. 216 Considerable difficulty was experienced with these engines owing to the rapid deterioration of the scraper rings fitted on the piston heads. 1992 Woodworker Feb. 86/3 Great care should be taken to smooth and even varnish the inside of the box so no air can leak past the piston head. < as lemmas |
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