活接
　　活接 loose joint
　　活接地 swinging earth
　　活接连系 articulated joint
　　活接联接器 joint coupling
　　活接三通 union tee
　　活接头 articulation union swivel union
　　活接头螺母 union nut
　　活接头螺栓 swing bolt
　　活接头套管 union thimble
　　活接卸槽 articulated chute (浇混凝土用的)
　　弯头 joint
　　弯头 angle fittings bent pipe elbow knee
　　弯头扳手 bent-handle wrench bent spanner
　　弯头车刀 angular tool
　　弯头持针钳 curved needle holders
　　弯头刀架 knee tool
　　弯头道钉 brob
　　弯头管 swan neck
　　弯头键 gib head key
　　弯头接合 knee-joint
　　弯头螺栓 bolt with one end bent back
　　弯头锁紧螺母 elbow jam unt
　　弯头套管 elbow union
　　弯头套筒扳手 offset socket wrench
　　弯头脱水器 elbow separator
　　弯头芯盒 elbow core box
　　三通
　　三通 tee bend tee branch tee joint tee conneetion tee fitting wye y yoke
　　三通玻璃栓 three-way glass stopcock
　　三通道放大器 three-channel amplifier three-path amplifier
　　三通道主动驾驶仪 three-dimensional autopilot
　　三通电缆分线盒 three-way coupling box
　　三通阀 tee valve three-port valve three-way valve triple valve
　　三通阀盖 triple-valve cap
　　三通阀活塞 triple-valve piston
　　三通阀联箱 three way valve menifold
　　三通阀体 triple body triple-valve body
　　三通管 single sweep tee t-branch (pipe) three-limb tube
　　三通管接头 tee pipe coupling
　　三通横长 horizontal length of tee
　　三通换向旋塞 three-way reversing cock
　　三通活栓 three-way cock
　　三通货协定 triparties currency agreement
　　三通接头 tee coupling tee fitting tee union three-way piece three-way connection
　　三通接线夹 three-way connector
　　三通开关 three-way cock
　　三通节制阀 three-way control valve
　　三通毗连 tee junction
　　三通路轮回器 three-terminal circulator
　　三通式热风炉 three-pass stove
　　三通天线转发开关 triplexer
　　三通筒 triple cylinder
　　三通筒垫密片 triple-cylinder gasket
　　三通弯头 three-way elbow
　　三通旋塞 tee cock three-way cock three-throw tap
　　三通轮回器 three-terminal circulator
　　三通液体流量计 tee fluid flow meter
　　三通闸阀 treble ported slide valve
　　纵贯
　　纵贯 direct connection straight in straight bore through feed(-)through once-through
　　纵贯拨号 through dial(l)ing
　　纵贯测量线路 end-to-end measurement
　　纵贯单向阀 in-line check valve straight check valve straightway check valve
　　纵贯道路 through road
　　纵贯的 through and through
　　纵贯地 dead earth dead ground
　　纵贯垫外底 through midsole
　　纵贯电报 telex
　　纵贯电报通信 telex communication
　　纵贯电流 through current
　　纵贯电流偏置 through current bias
　　纵贯电路 direct circuit
　　纵贯阀 pass valve straight-through valve straightway valve through valve
　　纵贯干馏炉 through retort
　　纵贯汽锅 once-through boiler
　　纵贯换料 once-through refuelling
　　纵贯回路 straight circuit
　　纵贯汇接呼叫制 straight forwardjunction working
　　纵贯监控 through supervision
　　纵贯接头 straight coupling straight fitting
　　纵贯接线装配 through joint
　　纵贯街道 through expressway through street throughway
　　纵贯进位 standing carry
　　纵贯开关 globe cock
　　纵贯空气制动阀 straight air brake valve
　　纵贯空气制动器 straight air brake
　　纵贯快动阀 straight-through fast acting valve
　　纵贯毗连 straight-through joint
　　纵贯裂化 straight-through cracking
　　纵贯流动 straight through flow