“packing ring”的概念、定义、翻译、参考文献-科学参考

单词	packing ring
释义	packing ring [`pak·iŋ ´riŋ] See <<piston ring>>
随便看	spin resonance spin rocket spin safe spin space spin-spin energy spin-spin relaxation spin stabilization spin state spin temperature spinthariscope Spintheridae Spinulosida spin-up spin wave spin welding spiny-rayed fish Spionidae spioniform worm spiracle spiral spiral arms spiral band spiral bevel gear spiral binding spiral chute

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