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- reserve circulation bit 反循环钻头
- Air driven hollow DTH hammer is applied,along with a set of dual wall drilling pipe and a specially designed reverse circulation bit,to conduct continuous coring reverse circulation drilling. 气动贯通式潜孔锤与双壁钻杆及专门研制的反循环钻头 (获国家发明专利 )配套使用 ,可实现反循环连续取心 (样 )钻进新工艺 ,连续获取的岩样采取率高 ,品质好 ,代表性强。
- 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。
- Emulator analyse on rake angle of injector hole in reverse circulation bit 反循环钻头引射孔倾角的仿真分析
- I reckon the girl is a little bit boyish. 这想这个女孩有点男孩子气。
- The factory has built up reserve fund. 这个工厂已积累了后备基金。
- I have kept a reserve fund in case of accidents. 我已筹备了一笔准备基金以防不测。
- Pound notes have been withdrawn from circulation. 一英镑面值的钞票已停止流通。
- Application of Air Lifting Reserve Circulation Drilling Technology in Coal Mine Gas Discharge 气举反循环钻进技术在煤矿瓦斯排放井中的应用
- 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。
- Suppose I reserve seats in advance. 我先去定好座位吧。
- 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。
- Reserve double room June fourth to tenth inclusive. 预订双人房间，六月四日至十日，共六晚，望订妥复电。
- Harvey discovered the circulation of the blood. 哈唯发现了血液循环。
- The area has been designated as natural reserve. 该地区已被指定为一个自然保护区。
- We observed the circulation of blood in frogs. 我们观察了青蛙的血液循环。
- The love scenes in the play were a bit overdone. 剧中的情爱场面演得有点过火了。
- The old coins have been withdrawn from circulation. 旧硬币已经收回不再流通了。
- Many forged notes are in circulation. 许多假钞在流通。
