活接
活接 loose joint
活接地 swinging earth
活接结合 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
三通道自动驾驶仪 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
三通控制阀 three-way control valve
三通连接 tee junction
三通路循环器 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
三通循环器 three-terminal circulator
三通液体流量计 tee fluid flow meter
三通闸阀 treble ported slide valve


直通
直通 direct connection; straight in; straight bore; through; feed(-)through; once-through
直通拨号 through dial(l)ing
直通测量线路 end-to-end measurement
直通单向阀 in-line check valve; straight check valve; straightway check valve
直通道路 through road
直通的 through and through
直通地 dead earth; dead ground
直通垫外底 through midsole
直通电报 telex
直通电报通信 telex communication
直通电流 through current
直通电流偏置 through current bias
直通电路 direct circuit
直通阀 pass valve; straight-through valve; straightway valve; through valve
直通干馏炉 through retort
直通锅炉 once-through boiler
直通换料 once-through refuelling
直通回路 straight circuit
直通汇接呼叫制 straight forwardjunction working
直通监控 through supervision
直通接头 straight coupling; straight fitting
直通接线装置 through joint
直通街道 through expressway; through street; throughway
直通进位 standing carry
直通开关 globe cock
直通空气制动阀 straight air brake valve
直通空气制动器 straight air brake
直通快动阀 straight-through fast acting valve
直通连接 straight-through joint
直通裂化 straight-through cracking
直通流动 straight through flow