spool

n.

线轴，线管；线轴状物；卷络的数量[长度]；缠线框

vt.

把…绕在卷轴上；缠绕；

复数：spools过去式：spooled过去分词：spooled现在分词：spooling第三人称单数：spools

valve spool滑阀；阀槽

spool valve短管阀

1. The film fly off the spool and wind itself round the projector.
   电影胶片从卷轴滑出缠绕在放映机上了。
2. An object,such as a spool or barrel,around which material is wound.
   电影胶片从卷轴滑出缠绕在放映机上了。

Fiber optic enclosure with external cable spool
Pull-Driven Scheduling for Pipe-Spool Installation: Simulation of Lean Construction Technique
Surge Dynamics in a Free-Spool Centrifugal Compressor System
Spool-and-line studies on the behavioural ecology of rats (Rattus spp.) in the Galápagos Islands
Flow forces analysis of an open center hydraulic directional control valve sliding spool
Electric control of wire rope fixed length spool separator machine
A comparative study of Navier-Stokes equation & Reynolds equation in spool valve analysis with considering cavitation
A Study on Notch of Spool Valve for Directional Control of Hydraulic Oil
Simulation Analysis and Calculation for Atypical Orifice Area of Spool Valve
Web site usability: a designer's guide