“directional circulation drilling”的概念、定义、翻译、参考文献-科学参考

单词	directional circulation drilling
释义	directional circulation drilling Encyclopedia 理学钻进方法释 directional circulation drilling正循环钻进冲洗介质经钻杆内腔流向孔底，将钻头切削破碎下来的钻渣岩屑，经钻杆与孔壁的环状空间携带至地面的钻探循环方式。
随便看	cryptic colouration cryptic satellite DNA cryptic species cryptic splice site cryptobiasis cryptobranchoid cryptocaryoniasis cryptococcal meningitis cryptococcosis cryptocrystalline cryptoendolith cryptogamia cryptogamic plants cryptogene cryptogenetics cryptogenic organizing pneumonia cryptogram cryptographic algorithm cryptographic checksum cryptographic firmware cryptographic hash function cryptographic module cryptographic protocol cryptographic protocol analysis cryptographic protocol design

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