单词	金之精
释义	同Fineness
随便看	ring-off lamp in pair ring of fractions ring-off signal ring-off-ten circuit ring off the hook ring of functions ring of operators ring of quaternions ring of quotients ring of race ring of rational integers ring of reces ring of reces;cline ring of right multiplications ring of saturn ring of sets ring of steel ring of the nibelung ring of the nibelung, the ringoid ring-oil ring; oil ring oiled bearing ring oiler ring one's own bell