feel free to jump in and help arrange the vocabulary below in alphabetical order :)
硫化 vulcanization
电压 voltage
空舱 void (or void space)
视线 visual line
视频 video frequency
钳台 vice stand
钳台 vice bench
振动 vibration
立杆 vertical welding
顶点 vertex
速度 velocity
向量 vector
气密 vapour (or gas) tight
气袋 vapor pocket
气锁 vapor lock
叶轮 vane wheel
叶片 vane
钒钢 vanadium steel
阀轭 valve yoke
阀杆 valve spindle
阀座 valve seat
阀杆 valve rod (or spindle)
阀位 valve position
阀囊 valve pocket
阀盘 valve plate
阀衬 valve liner
阀导 valve guide
阀规 valve gauge
阀面 valve face
阀箱 valve chest (or box)
阀壳 valve casing
阀体 valve body
可变喷射定时 VIT (= variable injection timing)
能见度指示器 visible indicator
黏性压差阻力 viscous pressure resistance
黏度压力系数 viscosity-pressure coefficient
虚质量惯性矩 virtual mass moment of inertia
乙烯树脂涂料 vinyl resin paint
氯乙烯发泡材 vinyl chloride foam
垂直工作范围 vertical working range
垂向棱块系数 vertical prismatic coefficient
垂直抓紧范围 vertical holding range
通风筒帆布罩 ventilator cover
向量平均速度 vector mean velocity
德国矿冶协会 VDEH (= Verein Deutscher Eisenhuttenleute, Germany)
漆葛绝缘电缆 varnished cambric insulated cable
可变压载装置 variable ballast system
气化式燃烧器 vaporizing combustion chamber
阀调节孔驱气 valve controlled port scavenging
德国工程师协会 VDI (= Verein Deutscher Ingenieure, Germany)
可变电压电焊机 variable voltage welding machine
可变冲程喷射泵 variable stroke injection pump
可变比率调整器 variable ratio regulator
浸油亚麻布绝缘 vanished cambric insulated
阀升程调整装置 valve lift adjusting gear
真空作用离合器 vacuum operated clutch
易损性 vulnerability
硫化器 vulcanizer
硬橡胶 vulcanite
旋涡度 vorticity
涡卷泵 volute pump
涡卷室 volute chamber
容积吨 volume ton
电压降 voltage drop
挥发油 volatile oil
传声管 voice pipe (or tube)
黏度计 viscometer (or viscosimeter)
黏度计 visco meter (or viscosimeter)
虚滑流 virtual slip
虚质量 virtual mass
乙烯基 vinyl
粮食船 victualler
胜利轮 victory ship
振动计 vibrometer
减振机 vibration reducer
特高频 very high frequency (VHF)
直立舵 vertical rudder
直立梯 vertical ladder
竖龙骨 vertical keel
立式机 vertical engine
游标尺 vernier
通风扇 ventilating fan
通风机 ventilating engine
通气阀 vent valve
通气管 vent pipe
通气孔 vent
百也门 venetian door
速度级 velocity stage
速度势 velocity potential
速度图 velocity diagram
蔬菜库 vegetable chamber
向量图 vector diagram
凡士林 vaseline
轮叶泵 vane pump
阀冲程 valve stroke
阀胶着 valve sticking
阀用钢 valve steel
阀弹簧 valve spring
阀定位 valve setting
阀驱气 valve scavenging
阀箱室 valve recess
阀推杆 valve push rod
阀升程 valve lift
阀杠杆 valve lever
阀动图 valve diagram
控阀台 valve control stand
阀动圆 valve circle
真空管 vacuum tube
真空柜 vacuum tank
真空泵 vacuum pump
真空线 vacuum line
真空计 vacuum gauge
航程修理 voyage repair
涡流理论 vortex theory
涡漩滑泻 vortex shedding
涡状空化 vortex cavitation
笋形弹簧 volute spring
涡卷弹簧 volute spiral spring
体积应变 volumetric strain
容积效率 volumetric efficiency
容积系数 volumetric coefficient
排水容积 volume of displacement
容积膨胀 volume expansion
容积收缩 volume contraction
电压调整 voltage regulation
减压装置 voltage reducing device
电压突跌 voltage dip
视觉信号 visual signal
目视检查 visual inspection
视觉通信 visual communication
目视检验 visible examination
可视警报 visible alarm
发烟气笛 visible air whistle
黏性阻力 viscous resistance
黏度指数 viscosity index (VI)
虚节距比 virtual pitch ratio
虚偏心距 virtual eccentricity
维氏硬度 Vicker hardness
振模曲线 vibration mode curve
振动模式 vibration mode
隔振橡胶 vibration isolating rubber
黏度指数 VI (= viscosity index)
裕干舷船 vessel with freeboard
垂向复板 vertical web
直立艏材 vertical stem
立式嵌接 vertical scarf
垂直整补 vertical replenishment (VERTREP)
直缘板 vertical margin plate
立式车床 vertical lathe
立式引擎 vertical engine
垂向重心 vertical center of gravity
立式锅炉 vertical boiler
垂向天线 vertical antenna
通风主道 ventilation trunk
通风系统 ventilation system
通风舌门 ventilating flap
通风装置 ventilating device
通风旋塞 ventilating cock
速度落差 velocity head
速度系数 velocity coefficient
车辆渡船 vehicle ferry
可变速泵 variable speed pump
变动负荷 variable load
无功时计 var hour meter
拉索卷盘 vang reel
斜桁支索 vang
轮叶试验 vane test
阀动行程 valve travel
阀动定时 valve timing
阀杆导路 valve rod guide
阀游戏杆 valve rocker
阀定位器 valve positioner
阀杆支轴 valve lever support shaft
阀杆间隙 valve lever clearance
阀动装置 valve gear
真空容器 vacuum vessel
真空试验 vacuum test
真空管路 vacuum line
真空风扇 vacuum fan
三角皮带 V-belt