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

• Numerical calculation of pressure drop of axial laminar flow in concentric annulus of power-law drilling fluid Churn flow and annular flow are common flow patterns encountered in gas-liquid systems through conduits.
  幂律钻井液同心环空轴向层流压降的计算对垂直同心环形管内上升气液团状流向环状流的转换进行了研究。
• Characteristics of Flow Field in Annulus Space between Train and Tunnel
  列车与隧道环隙空间流场特性的研究
• 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
• Quantitative assessment of left ventricular diastolic function in hypertension by mitral annulus velocity
  应用二尖瓣环运动速度评价高血压患者左室舒张功能的研究
• 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。
• 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。
• Mitral annulus velocity detected by TDI is sensitive and reliable to evaluate left ventricular function in heart failure children.
  以TDI方法测定二尖瓣环运动频谱评价心力衰竭儿童左室功能是敏感和可靠的。
• The analysis chamber consists of a metal block which houses an annulus.
  分析室由金属块组成，内装一个环。
• The diffraction of super Gaussian beams by an elliptic annulus is studied numerically.
  本文采用数值计算方法讨论了超高斯光束经椭圆环的衍射现象。