annulus

英

美

n.  环形物，环带（节、体）；圆环域

化学

COCA.36877

英英释义

noun

• (Fungi) a remnant of the partial veil that in mature mushrooms surrounds the stem like a collar
  Synonym:skirt
• a toroidal shape
  1. a ring of ships in the harbor
  2. a halo of smoke
  Synonym:ringhalodoughnutanchor ring

双语例句

• To reduce the pollution of the oil-gas well towards the bottom after its fracturing and decrease the operation costs, the hanger specially used for annulus feeding fracturing was developed.
  为了减轻油气井压裂后对地层的污染并降低作业成本，研制了高强度环空压裂专用悬挂器。
• A CFD Simulation of the Flow Field of a Power Law Fluid in an Eccentric Annulus
  幂律流体偏心环空流场的CFD模拟
• In all cases, filtering operations are carried out using a square window or annulus.
  在所有的情况下，滤波运算都是使用方形窗或圆环来进行的。
• Sleeve used to establish between the tubing and annulus flow channel, or used to control the production of disposable isolation layer or layers.
  滑套用于建立油管和环空之间的流动通道或用于控制生产层或隔离弃层。
• PIV experimental study on the axial velocity's distributing law of power law fluid's helical flow in eccentric annulus
  幂律流体偏心环空螺旋流轴向速度分布规律的PIV实验研究
• The Application of Screw Pumps in Directional Wells and the Technology Research on Annulus Test
  定向井中螺杆泵及螺杆泵环空测试技术研究
• When notochord organization is ceaseless and migratory, fiber annulus also increases.
  在脊索组织不断迁移时，纤维环亦增大。
• Study on Annulus Pressure Distribution after Perforation of Composite Perforators
  复合射孔器射孔后环空压力分布试验研究
• The two-dimentional motion differential which fits for non-Newtonian fluid in eccentric annulus with permeable well wall is studied in this paper.
  本文研究了适合带渗透性井壁的偏心环空非牛顿流体二维运动微分方程式。
• A novel gas-liquid self-sucking nozzle with inward-convex annulus structure was equipped to study the dissolution of oxygen.
  建立实验装置，研究一种带凸形圆环结构的新型自吸式气液二相喷嘴的吸气溶氧性能。