junk ring

名词 n.
中文释义

英文释义

名词 n.
  1. A wide ring which fits in a groove around the piston of an internal combustion engine to keep it steamtight by retaining the packing in place.

词形变化

junk rings plural

词源

From junk + ring, first use appears c. 1839 in the writings of Robert Spencer Robinson.
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