闭路管的英文

• circuit closers

• 闭路:    mesh; closed circuit; closed ...
• 管:    pipe; tube
• 闭路管系:    closed circuit pipe system; closed-circuit pipe system
• 闭路管式粘度计:    closed-loopipe viscometer
• 闭路:    mesh; closed circuit; closed-loop circuit; closing◇闭路报警装置 closed-circuit alarm device; 闭路电视(有线电视) closed circuit television; 闭路天线 closed antenna; closed aerial