单词 | piston spring |
释义 | > as lemmaspiston spring ΚΠ 1796 J. Robison in E. Robinson & A. E. Musson James Watt & Steam Revol. (1969) 140 The piston springs should be bent downwards at the end next the piston rod. 1881 Manufacturer & Builder July 145/3 The auxiliary pistons are provided with steel piston springs. < as lemmas |
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