“smooth drilling”的概念、定义、翻译、参考文献-科学参考

单词	smooth drilling
释义	smooth drilling [`smüth `dril·iŋ] ^ENGINEERING Drilling in a rock formation in which a fast rotation of the drill stem, a fast rate of penetration, and a high recovery of core can be achieved with vibration-free rotation of the drill stem.
随便看	chorioallantois choriocarcinoma chorioepithelioma chorion chorionic adenoma chorionic gonadotropin chorionitis chorioretinal chorioretinitis choripetalous chorisepalous chorisis chorismite Choristida Choristodera C horizon chorography choroid choroiditis choroid plexus chorology choropleth chosen position chrematophobia Christiansen effect

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