鉆頭常數 的英文怎麼說
中文拼音 [zhēntóuchángshǔ]
鉆頭常數
英文
bit co tant-
But after innumerable fluttering thoughts, like a man perfectly confus d and out of my self, i came home to my fortification, not feeling, as we say, the ground i went on, but terrify d to the last degree, looking behind me at every two or three steps, mistaking every bush and tree, and fancying every stump at a distance to be a man ; nor is it possible to describe how many various shapes affrighted imagination represented things to me in, how many wild ideas were found every moment in my fancy, and what strange unaccountable whimsies came into my thoughts by the way
這使我心煩意亂，像一個精神失常的人那樣，頭腦里盡是胡思亂想，后來就拔腿往自己的防禦工事跑去，一路飛奔，腳不沾地。可是，我心裏又惶恐至極，一步三回頭，看看後面有沒有人追上來，連遠處的一叢小樹，一枝枯樹干，都會使我疑神疑鬼，以為是人。一路上，我是驚恐萬狀，頭腦里出現各種各樣的幻景，幻覺里又出現各種各樣荒誕不經的想法以及無數離奇古怪的妄想，簡直一言難荊我一跑到自己的城堡-以後我就這樣稱呼了-一下子就鉆了進去，好像後面真的有人在追趕似的。In chapter six, based on the preceding chapters " research, the practicality of the full scale dr i 11 ing simulating test device has been tested by the debugging and the performance test. under simulating drilling conditions, the rock mechanical properties and the bits " dynamical tests are analyzed and set forth specifically. at the same time the effect of bottom pressure difference on the oil field exploration and development has been discussed
第六章在前述分析研究的基礎上，通過對模擬裝置的系統調試及性能測試，驗證了全尺寸鉆井模擬裝置的實用性，在鉆井模擬條件下對巖石的機械性質、牙輪鉆頭動態測試給予了具體的分析闡述，同時還分析探討了井底壓差對油田勘探開發的影illb ，並且為宋深101井的實際施工作業提供了非常有價值的指導參數。
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