英语词汇“obturator ring”的读音、翻译、释义、用法及例句-开邑网

词汇	obturator ring
释义	obturator ringobturator ring1.■闭塞环;活塞环
随便看	square opening single end box wrench square orifice squareoval roughing passes square parachute square parenthesis squareparenthesis square pass square pavilion square perch square pier square pillar vertical drilling machine square pitch arrangement square planar complex square planting square plug gauge square pocket sowing square point shovel square position square pot square prism square profile pressure gauge square pulse square punch square pyramid square pyramid space grid

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