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- The nccessity and urgency of PDCbit downhole folw field testing are demonstrated according to the character of PDC bit structure,principle of rock fracturing and circumstances of using in drill sites. 根据PDC钻头的结构特点、破岩原理及现场使用情况,阐明了进行PDC钻头井底流场试验研究的必要性和迫切性。
- The results indecated that tile simulitude criterions were only related to bit structure demension, and were constants.Field drilling could be studied by these criterions in laboratory. 结果表明,相似准则只与钻头的结构尺寸有关,且为定值,以此即可在室内进行相似于现场实钻的试验研究。
- 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。
- I reckon the girl is a little bit boyish. 这想这个女孩有点男孩子气。
- Do you think Jack could bite in his secret want? 你以为杰克能忍住不说出他藏在心里的欲望吗?
- 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。
- The little cat gave me a playful bite. 小猫顽皮地轻轻咬了我一下。
- The two halves of the structure didn't marry up. 该结构的两部分未配合好。
- 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。
- The love scenes in the play were a bit overdone. 剧中的情爱场面演得有点过火了。
- I'm a little bit tired. Let's take a short rest. 我有点累了。让我们休息一会儿。
- High winds put great stress on the structure. 大风作用于该建筑物上而产生巨大的应力。
- Setting up this business was a bit of a gamble. 开办这样的公司有点冒险。
- The structure had keeled over in the high winds. 那座建筑物让大风给刮倒了。
- It wouldn't do him any harm to work a bit harder. 工作努力点对他没什么害处。
- A fan-shaped anatomical structure. 扇形器官扇形的解剖结构
- He only put a bit on his plate to make fashion. 他只是拨了一点食物到盘子里做做样子。
- He read all the interesting bit in the newspaper. 他把报纸上点点滴滴有趣的新闻都读了。
- Sale is down a bit due to the revaluation. 由于货币升值销售额有下降。