管式绞线机、管绞机
tubular stranding machine
tube strander
tubular closer
笼式绞线机
cage-type stranding machine
cage stranger
X80电阻焊管线管
X80 grade electric resistance welding linepipe
地下管线管理
underground pipeline management
Management of Underground Pipelines
地下管线管理系统
underground pipeline management system
顶部对流式管式炉
overhead convection type of pipe still
overhead convection type pipe still
多管式机械除尘器
multivortex mechanical collector
高速管绞机
high speed tubular stranding machine
钩形集极晶体管管线
hook collector transistor