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- It is summarized and analyzed the strength characteristic of andesite and the principium of destroying rock of roller bit,take andesite for example. 以安山岩为例,总结和分析了安山岩的强度特性以及组合牙轮钻头的破岩机理。
- The operating performance quality of the roller bit, which is the most main broken crag tool, directly influence the well drilling quality, well drilling efficiency and well drilling cost. 牙轮钻头是钻井工程中最主要的破岩工具，其工作性能的好坏直接影响钻井质量、钻井效率和钻井成本。
- Keywords Roller bit: Bottom hole: Crossflow hydraulics: Model: Coherence test; 牙轮钻头;井底;物理模型;相关分析;（平面流场）;
- Their dog bit a hole in my trousers. 他们的狗把我的裤子咬了个窟窿。
- Study of Single Spherical Roller Bit 单牙轮钻头研究
- Next, two of the blue-hooded assistants brought out a large radiator and she bit holes in it! 接着，两个戴兜帽的助手拿上来一面大大的暖气片，格莎在上面咬出了许多洞!
- STUDY ON BELLEVILLE RING SEAL OF ROLLER BIT 牙轮钻头碟形圈密封的试验研究
- Keywords drillability;logging data;roller bit; 可钻性;测井资料;牙轮钻头;
- He bit off a large piece of the apple. 他咬下一大块苹果。
- She was a bit queer after her husband deserted her. 她遭丈夫遗弃後精神有点失常。
- Sealing mechanism of metal face seals for roller bit 牙轮钻头单金属浮动密封结构的密封机理
- I reckon the girl is a little bit boyish. 这想这个女孩有点男孩子气。
- Study on Roller Bit Rock-Breaking Power in Vertical Wells 直井牙轮钻头碎岩功率研究
- roller-bit hole rig 牙轮钻机
- The ride on the roller coaster dizzied us. 乘坐云霄飞车使我们头晕。
- The seedling have shrivel up a bit in the hot sun. 在炎热的太阳光下，幼苗已有一点乾枯。
- May I borrow your roller skates? 我可以借你的旱冰鞋吗？
- slim hole rig 钻机
- A bit of embrocation will soothe your bruised knee. 用一点搽剂可使你那青肿的膝部消肿。
- Laboratorial Research on Roller Bit Colliding with Borehole Wall 牙轮钻头与井壁碰撞的室内实验研究
