“drill stem”的概念、定义、翻译、参考文献-科学参考

单词	drill stem
释义	drill stem [`dril ´stem] See <<bent sub>>
随便看	poncelet Ponchon-Savarit method pond pondage pondage land ponded stream ponderosa pine ponding ponente Ponerinae pongee Pongidae poniente pons Pontian pontianak gum pontic pontine flexure Pontodoridae pontoon pontoon bridge pontoon-tank roof Pontryagin's maximum principle pony set pony truss

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