feel free to jump in and help arrange the vocabulary below in alphabetical order :)
迭代法 iteration method
配发室 issuing room
等温线 isothermal line
等角图 isometric plan
等磁线 isomagnetic line
分隔链 isolating link
等倾线 isoclinal (or isoclinic) line
等倾线 isoclinal (or iso- clinic) line
等压线 isobaric line
铁工厂 iron works
铁工厂 iron (or worker‘s) shop
倒缸机 inverted engine
逆时限 inverse-time-limit
不变量 invariant
段间阀 interstage valve
翻译器 interpreter
内部波 internal wave
内应力 internal stress
内阻抗 internal impedance
内效率 internal efficiency
内燃机 internal combustion engine
内浮力 internal buoyancy
中间阀 intermediate valve
客货船 intermediate ship
中压缸 intermediate pressure cylinder
中间梁 intermediate beam
中间轴 intermediate (or tunnel) shaft
中间轴 intermediate (or line, or tunnel) shaft
断续板 intercostal plate
断续材 intercostal
互换性 interchangeability
积分仪 integrator
一体舱 integrated tank
进气阀 intake valve
绝缘蜡 insulating wax
绝缘带 insulating tape
绝缘纸 insulating paper
绝缘油 insulating oil
绝缘剂 insulating compound
绝热舱 insulated hold
仪表盘 instrument panel
仪器灯 instrument light
说明单 instruction sheet
说明卡 instruction card
说明书 instruction book
检查员 inspector
检验员 inspection man
检视孔 inspection hole
检视盖 inspection door
内搭板 inside butt strap
插入板 insert plate
内板列 inner strake
内蒙皮 inner skin
内层板 inner plating
内艏板 inner jib
内壳板 inner hull
内底板 inner bottom plating
进入阀 inlet valve
进入口 inlet port
入口管 inlet pipe
入口角 inlet angle
喷射阀 injection valve
初速度 initial velocity
初应力 initial stress
初应变 initial strain
初稳度 initial stability
初压力 initial pressure
内牵索 inhaul line
红外线 infra red ray
影响线 influence line
充气式 inflatable
着火点 inflammation point
单独材 individual member
指示阀 indicator valve
指示灯 indicator lamp
示功图 indicator diagram
示功图 indicator card (or diagram)
指示灯 indicating lamp
指示仪 indicating instrument
示功图 indicating diagram
橡皮管 india-rubber hose
独立柜 independent tank
斜置机 inclined engine
斜天线 inclined antenna
焚化炉 incinerator-boiler
焚化炉 incinerator
入射波 incident wave
入射角 incident angle
流向力 in-line force
共轴线 in-line alignment
浸渍剂 impregnating compound
移民船 immigrant ship
浸水衣 immersion suit
沉入楔 immersed wedge
火星塞 ignition plug
点弧极 ignition anode
点火球 ignition (or hot) bulb
点火器 igniter
惰齿轮 idle gear
冰阻力 ice resistance
冰负荷 ice load
制冰机 ice engine
破冰机 ice crusher (or bricker)
冷藏库 ice chamber
破冰船 ice breaker (or ice boat)
铁管 iron pipe
铁芯 iron core
铁泥 iron cement
铁床 iron berth
间极 interpole
强度 intensity
积分 integration
检查 inspection
近海 inshore
输入 input
内轴 inner shaft
内底 inner bottom
入口 inlet
喷射 injection
锭钢 ingot steel
锭号 ingot number
锭模 ingot case (or mould)
电感 inductance
压痕 indentation
凹入 indent
内轴 inboard shaft
同相 in-phase
船内 in board
冲力 impulsive force
含浸 impregnation
冲击 impact
照明 illumination
烧球 ignition ball
点火 ignition
惰轮 idle wheel (or cook wheel)
空转 idle running
冰柜 ice tank
冰箱 ice locker (or box)
冰库 ice locker
冰舱 ice hold
冰锚 ice anchor
面内等方性材 isotropic materials
美国仪器学会 ISA (= Instrument Society of America, U.S.A.)
印度国家标准 IS (= Indian Standards, India)
印度验船协会 IRS (= Indian Register of Shipping)
英国石油学会 IP (= Institute of Petroleum, U.K.)
钢料订购重量 invoice steel weight
本质安全线路 intrinsically safe circuit
安全声力电话 intrinsic safety sound power telephone
国际吨位证书 international tonnage certificate
国际电信规则 international tele-communication and radio regulation
国际岸边接头 international shore connexion (or connection )
国际海事组织 international maritime organization (IMO)
国际信号代码 international code of signal
船内通讯设备 internal communication apparatus
层间剪切强度 interlaminar shear strength
船内通信电缆 interior communication cable
绝缘电阻试验 insulation resistance test
绝缘磁场绕组 insulated field winding
仪器用变压器 instrument transformer
施工期间检查 inspection during construction
已充气救难艇 inflated rescue boat
充气式救生筏 inflatable life raft
惯性导航系统 inertial navigation system
惰气窒火系统 inert-gas smothering system
惰气制造装备 inert-gas plant
感应电压试验 induced voltage test
独立水吸口 independent bilge suction
递增螺距螺桨 increasing pitch propeller
内外迭接外板 in and out plating (or raised and sunken plating)
脉冲时限系统 impulse duration system
冲击硬度试验 impact hardness testing machine
国际海事组织 IMO (= international maritine organization)
国际海事组织 IMO (= International Maritime Organization)
国际劳工组织 ILO (= International Labour Organization)
点火迟延时间 ignition delay period
理想螺桨效率 ideal propeller efficiency
国际建筑会议 ICBO (= International Conference of Building Officials)
印度锅炉规程 IBR (= Indian Boiler Regulation, India)
间苯二酸型树脂 isophthalic type (or iso- type) resin
国际标准化组织 ISO (= International Organization for Standardization)
爱尔兰国家标准 IS (= Irish Standards, Ireland)
国际载重线公约 international loadline convention
国际载重线证书 international loadline certificate
国际电气标准会 international electro- technical commision
输出入控制系统 input-output control system (IOCS)
输入电路滤波器 input line filter
入口空气除雾器 inlet air demister
已充气救生设备 inflated appliance
指示燃料消耗率 indicated specific fuel consumption
脉冲电压产生器 impulse voltage generator
冲动反动涡轮机 impulse reaction turbine
防渗透护层电缆 impervious sheath cable