annulus

UK:  ['ænjʊləs]

复数：annuli  

n.

1.环(带),环节,环轮

2.【动】体环,菌环

3.【天】环食带

4.【数】圆环域

5.蕈环

1 . A sonic tool used in a pumping well to determine the distance to the top of the fluid in an annulus during pumping and shut in.
在抽油井的抽油过程中和关井期间测量环空内液面高度的一种声波测井方法。

2 . In the age of the Internet, network marketing will become a hospital marketing strategy of important one annulus.
在互联网时代，网络营销必将成为医院市场营销战略中的重要一环。

3 . At present, the methods of isotope tracer and turbine flowmeter are universally used for testing annulus well in home oilfield.
同位素示踪法和涡轮流量计法是目前国内各油田普遍采用的环空测井方法。

4 . A completion component, generally included in the lower assembly near the packer, that allows communication between the tubing and annulus.
一种完井部件。它通常包括在接近封隔器的下部组合中。它用来提供在油管与环空之间的连通。

5 . The frame, in accordance with this invention, defines a picture frame having a central opening defined by an annulus.
根据本发明的框架限定有一个中央开口的画框环形。