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- The flow field of PDC bits is very complicated during drilling process, while optimizing its hydraulics parameters is an effective method to improve its drilling performance. PDC钻头在实钻过程中井底流场非常复杂,而优化其水力学参数是提高钻头钻井能力的有效手段。
- The high quality triangular PCD bits made in our country will play proper roles in improving drilling performance under complex geologic conditions of more and more ultra-deep wells. 国产高质量三角形PCD钻头将会为提高日益增多的超深井复杂地质条件下的钻进效果发挥其应有的作用。
- The monkeys were stilts dolphin's water polo liger's Ring of Fire drill performances are so well that visitors from time to time to win the bursts of applause. 猴子们的高跷海豚们的水球狮虎们的钻火圈表演，是那么的惟妙惟肖，不时博得游客们的阵阵喝彩。
- New Performance Motors Set New Benchmarks in Drilling Performance 建立钻井作业新标准的高性能井下马达
- Study on drilling performance of swiveling conic abrasive jet 旋转锥形磨料射流钻孔性能的研究
- The drilling troops mustered on the hill. 演习部队在小山上集合起来了。
- The performance truly exalted the audience. 演出确使观众情绪高昂。
- The workman is drilling in the wall. 工人正在墙上打孔。
- Drilling is cutting a hole with a drill. 钻削就是用钻头钻一个孔。
- I didn't think her performance was up to par. 我认为她表现得不及平时。
- At six we were fallen in for drill. 六点钟我们站好队准备操练。
- We need a yardstick to measure our performance by. 我们的表现需要一个检验的标准。
- The noise of the drilling is intolerable. 钻孔的噪音让人受不了。
- Live performance is the best! I am still keyed up. 现场演出是最棒的！我仍兴奋不已。
- People would not dig down for such a performance. 人们不愿意为这样的演出掏腰包。
- We like to see the performance of dolphins. 我们喜欢看海豚的表演。
- The sound of that drill jangles horribly on the nerves. 那台钻机的声音响极了，十分刺耳。
- His performance of Hamlet was topnotch. 他扮演哈姆雷特最为出色。
- You'd better set a goal before you start the drill. 练习开始前，你最好设定一个目标。
- After a long drill he told the squad to fall out. 操练了好半天之后，他让这个班解散了。
