junk ring
noun
: a wide ring around the piston of an internal-combustion engine forming the base for piston rings
Word History
Etymology
junk entry 1; from its originally use in confining the hemp packing round the piston of a steam engine
| 单词 | junk ring |
| 释义 | junk ringnoun : a wide ring around the piston of an internal-combustion engine forming the base for piston rings Word HistoryEtymology junk entry 1; from its originally use in confining the hemp packing round the piston of a steam engine |
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