surface string 中文意思是什麼
surface string
解釋
表層套管-
The water rat, paralysed and string, saw at last a distant speck on the white surface of the road.
水老鼠神思恍惚，木然遠望，終于看見一個小斑點出現在遠方潔白的路面上。 -
On the basis of analyzing the working circumstance and prosperity of downhole drilling string of the surface dynamic rotating drilling vertical well, the force prosperity and failure forms of downhole drilling string are focused on. and further research has been done on the vibration damage of downhole drilling string as well as the construction and work prosperity of vibrating - proof hydraulic shocker absorber
本文在對地面動力旋轉鉆井直井井下鉆柱的工作環境和特性加以分析的基礎上，著重對鉆柱在井下的受力特性以及損壞形式進行了分析，並對鉆柱在井下的振動危害以及用於防止振動的水力加壓減震器的結構、工作特性等一些規律進行了深入的探索和研究。 -
Friction creates notches on the surface of the string, leading to premature breakage
摩擦會導致球線間的切痕，使得球線過早的斷掉。 -
The surface structure of a sentence is the string of sounds or words that we articulate and hear.
一個句子的表層結構是我們發出並且聽到的一系列音素或詞。 -
In chapter two, the prosperity of the motion, force and screwed joint of the surface dynamic rotating drilling downhole drilling string has been discussed
第二章分析探討了地面動力旋轉鉆井井下鉆柱的運動狀態、受力及螺紋聯接的特性。 -
Chapter three discusses the vibration forms of the surface dynamic rotating drilling downhole drilling string, analyzes the damage of low frequency ancf fongif ucfi ' na / vibration to downhole drilling string, and set up a set of math models of the longitudinal and torsional vibration
第三章分析探討了地面動力旋轉鉆井井下鉆柱的的振動形式，並提出分析了低頻縱振現象對井下鉆柱的損害，以及建立了縱向、扭轉振動的數學模型。 -
In chapter one, engineering flow and current research results in domestic and international of the surface dynamic rotating drilling have been generalized. furthermore, the engineering value and significance of motion of the surface dynamic rotating drilling downhole drilling string have been illustrated
第一章除概述了地面動力旋轉鉆井的工藝流程及國內外研究現狀外，還闡述了研究地面動力旋轉鉆井井下鉆柱的運動狀態的工程價值及意義。 -
However, at this stage the outer surface of the string is rough and must be polished for smoothness
然而，這一步球線的外表面還是粗糙的，所以需要打磨光滑。
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