“swivel”的概念、定义、翻译、参考文献-科学参考

单词	swivel
释义	swivel [`swiv·ǝl] ^{DESIGN ENGINEERING} A part that oscillates freely on a headed bolt or pin. ^{PETROLEUM ENGINEERING} A short piece of casing having one end belled over a heavy ring, and having a large hole through both walls, the other end being threaded.
随便看	sectional core barrel sectional header boiler sectionalized vertical antenna sectional radiography section house section line section modulus sector sectoral harmonic sectoral horn sector boundary sector disk sector display sectored light sector gate sector gear sectorgram sector interleave sector map sector mark sector of fire sector scan sector search sector structure sector wind

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